Some standard content:
Machinery Industry Standard of the People's Republic of China
ZSJ-2800 reducer
Subject content and scope of application
JB/T 6124 --- 92
This standard specifies 2SJ- Type and basic dimensions of 2800 reducer. Technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, etc.
This product is suitable for the ZGM95 (MPS190) swing type coal mill in the thermal power generation industry drive equipment. It is also suitable for similar transmission equipment in building materials, metallurgy and other industries.
Quoted standards
2
G1356
GB 1184
GB1174
Basic tooth profile
Involute cylindrical gear
Shape and position tolerances
Regulations for unspecified tolerances
Casting bearing alloys
Rolling bearing steel balls
GB 308
GB11365 bevel gears and hypoid gear
Accuracy
GB10095
Involute cylindrical gear accuracy
J1/ZQ4000.3 General technical requirements for welding parts JB/ZQ4000.9 General assembly Technical conditions
JB/7Q4000.10 General technical conditions for coating J131152 Boiler and steel pressure vessel docking 3 types, dimensions and basic parameters
Ultrasonic flaw detection of welds
3.12S·2800 deceleration See Figure 1 for the outline and installation dimensions of the device. 3.2 Model installation method
ZSJ-[
L base plate length (mm)
Orthogonal three-stage reducer||tt| |3Basic parameters, see Table 1.
3.3
Table 1
Bevel gear
Model
ZSI 2800
Cone pitch
Inm||tt| |365.35
u
670
center distance
mm
1120
input amount
constant power|| tt||kw
396
Input speed
r/min
990
3.4 ??reducer bevel gear adopts Klingenberg cycloid - Quasi-involute bevel gear. The Ministry of Mechanical and Electronic Industry of the People's Republic of China approved the total transmission ratio on June 9, 1992
37.3
axial pressure
static load
10x0
best quality
ke
25916
1993-01-01 implementation
177
JB/T 6124
3.5 reducer cylindrical gear tooth profile Should comply with the regulations of GB1356. 2800
630
300
2920
670
008
4 technical requirements
210
4.1
General technical requirements
1830
1120
$1868
1470
4170
300
92
8-$45
989
16-M48
Figure 1
100
A
M1:10
28
4.1.1 Products should comply with the requirements of this standard and be manufactured in accordance with drawings and technical documents approved through prescribed procedures. 4.1.2 The efficiency of the reducer shall not be less than 0.92.
4.1.3 The speed of the high-speed shaft of the reducer shall not be greater than 1000r/min. 4.1.4 The reducer should be used for clockwise one-way operation. 4.1.5 The operating ambient temperature of reducer 1 is 40~~+45(. 4.1.6 The reducer should operate continuously within the rated working load range. The starting load should not be greater than 2 times the rated load. 4.2 Manufacturing technical requirements for main parts | |tt||478
4.2.1 Body and cover
JB/T 6124-92
The welding of the body and cover shall comply with the provisions of JB/ZQ4000.3 4.2. .1. 1
4.2.1.2 Stress relief treatment should be carried out after the body and cover are welded. 4.2.1.3 No oil leakage is allowed in the welds of the body and cover. 4. 2. 1. 4||tt ||a.
b.
c.
d.
e.
Processing requirements for the relative bearing holes of the body and cover: each cylinder The limit deviation of the center distance of the gear bearing hole shall comply with the Class 7 regulations of GB10095; the limit deviation of the shaft distance of the bevel gear bearing hole shall comply with the Class 6 regulations of GB10095; the coaxiality of the corresponding bearing seat hole shall comply with the Class 6 regulations of GB10095. Level 6 regulations of GB1184; the tolerance zone of each bearing hole is H7;
The bearing hole axis parallelism tolerance is measured on the bearing span L; the axis direction parallelism tolerance: ·L/h
W axis Directional parallelism tolerance: F=f,+L/3 where: f, should comply with the level 6 regulations of GB310095: I
center
bearing span, mm;
- Gear width, mm.
The verticality tolerance between the center lines of the two bevel gear shaft holes should be less than 0.04 mm. f.
4.2.1.5 Parallelism tolerance of the upper plane of the machine body relative to the bottom surface. The value is 0.15mm. 4.2.1.6 The position of the anchor bolt hole on the bottom plate of the machine body is based on the input shaft and the output shaft, and its position tolerance should be less than ±0.5mIm. 4.2.2 Bevel gears, gears, gear shafts and low-speed shafts. 4.2.2.1 Bevel gears and gear shafts are made of integral forgings. The materials, heat treatment and mechanical properties should comply with the requirements in Table 2, or materials with mechanical properties no less than that should be used. The tooth surfaces are carburized and quenched, and the effective hardened layer depth after finishing is ( 0.2～0.25)Mh. Fire cracks and grinding cracks are not allowed on the tooth surface.
Table 2
Sectional dimensions
Material
20CrNi2MoA
Heat treatment
Carburizing
Fire
Tempering
mm
100~~300
>300~ 500
>500~~700
4.2.2.2 Requirements for large gears using welded structures a.
p
MPa
1050||tt| |950
900
a
machine
MPa
850
750
700
can
Mechanical
Medium
%
14
13
12
45
40| |tt||30
2 1e
1/cm
70
60
50
degree
hard
HRC
Tooth surface
57.
1
Core
135+
The ring gear adopts 40CrNi2MoA as a whole Forgings, heat treatment and mechanical properties should comply with the provisions of Table 3, or use materials with mechanical properties no less than;
Table 3
Sectional dimensions
Material
|tt||400rNi2MoA
45
Heat treatment
Quenching and tempering
Normalizing
mm
1160
>160 -~250
>250-~500
100
MPa
1000
950
900
600| |tt||Mechanical
Energy
G
MPa
800
750
700
300|| tt||15
14
12
15
%
45
40
40||tt| |38
:
/em
50
40
40
30
Hardness
HB
321- -363
293--311
285-321
170- 210
479
b.
JB/T 6124- 92
The wheel hub and auxiliary plate are made of high-quality carbon structural steel. 4.2.2.3 The low-speed shaft is made of Sichuan 40CrNi2MoA integral forgings. The heat treatment mechanical properties should comply with the requirements of Table 3, or use materials with mechanical properties no less than it, ||tt 4.2.2.4 | Processing requirements for the shaft diameter at the connection: 4.2.2.5
a.
b.
c.
d.
for gear shafts and low-speed shafts The coaxiality of the reference shaft diameter and the key connection shaft diameter should comply with the level 6 requirements of GB1184; the gear end face runout tolerance should comply with the level 6 accuracy requirements of GB10095; the tolerance zone of the gear reference hole is H7;
gear shaft The standard shaft diameter tolerance zone of the low-speed shaft is III6, and the shaft diameter tolerance zone of the key connection is III6. The end runout tolerance of Giya shaft fan is GB1184 level 6;
e.
The shaft diameter of the input shaft key joint is m64.2.2.6. Gear accuracy
a.
The accuracy of circular chain gears shall comply with Level 6a of GB11365. Inspection items should comply with the provisions of Table 4: Table 4
Inspection Group
Inspection Items
Table 4 Code Meanings
Tolerance Group
F and Fi | |·The cumulative tolerance of each tooth pitch, the tolerance value should comply with the level 6 regulations of GB11365; fj - the tooth pitch limit deviation deviation value should comply with the level 6 regulations of GB11365; - the tolerance of the relative error of the tooth shape, the tolerance value should comply with Level 6 regulations of GB11365; f-axis spacing limit deviation, the deviation value should comply with the Level 6 regulations of GB11365. Contact spot requirements should comply with the Level 6 regulations of GB11365 Public Group II
Contact spots, soil||tt. ||The accuracy of cylindrical gears is in accordance with the 876HK (JI.) standard of GB10095. The inspection items are as specified in Table 5.
Table 5
Inspection Group
Inspection Items||tt| |The meaning of the codes in the table:
丨Tolerance Group
F
II Tolerance Group
f and
cycle cumulative tolerance.Tolerance value Should comply with the Level 8 regulations of GB10095; F
tooth shape tolerance, the tolerance value should comply with the Level 7 regulations of GB10095; .
fe
Jn ni
Weekly section Limit deviation, the deviation value should comply with the level 7 regulations of GI310095; the tolerance value of the tooth direction should comply with the level 6 regulations of GB10095: the minimum normal side clearance should meet the requirements of Table 8. The contact spot requirements should comply with the level 6 regulations of GB10095. Level regulations. 4.2.3 Bevel gear tooth thickness tolerance
th and tolerance group
Fa
wheel set
contact spot
4.2.3.1 tooth thickness The upper deviation E value should comply with GB11365's Class 6 accuracy and minimum normal backlash a category requirements 4.2.3.2 Ring gear runout tolerance F, and the value should comply with GB11365's Class 6 tolerance value T. GB11365 normal backlash tolerance category A, 4.2.4 cylindrical gear tooth thickness limit deviation E, E should comply with the provisions of Table 6 480
Accuracy level
Normal module mr|| tt||mm
>10~16
JB/T 6124- 92
Table 6
Graduation circle diameter d
mm||tt ||>400~~800
800~-1 600
>1 600~2 000
4.2.5 The average length deviation of the common normal line E and F should comply with the provisions of Table 7 . Table 7
Accuracy level
7
4.2.6
Thrust sliding bearing
4.2.6.1
a.|| tt||h.
c.
d.
thrust upper tile
normal modulus m
mm
10~ 16
Dimensioning circle diameter d
mm
>400~800
>800--1 600
21 600~2 000||tt ||upper
lower
lower
deviation code
E(H)
E.(K)
E(F)
(1.)
E(J)
E(L)
Deviation code
Ew
Ew||tt| |Ew
E
Ew
E
upper
下
:
下
m
Limit deviation
224
336
280
448
320
512
um| |tt||Limit deviation
238
288
294
330
33
446
Thrust upper tile Made of 45" solid forgings or steel plates of the same material, its heat treatment mechanical properties should comply with the provisions of Table 3: the flatness of the thrust upper tile working surface is 0.04mm; flaw detection should be carried out after finishing, and no inclusions, cracks, etc. are allowed. Defect: Repair welding is not allowed.
4.2.6.2
Thrust lower tile
a.
d.
The casting material of the thrust lower tile surface is Zchsnsbl1-6, and its chemical composition and hardness should comply with the provisions of GB1174; the base of the thrust lower tile is made of 35 carbon steel integral forgings or sheets with properties no less than its performance; the bonding quality of the casting layer of the thrust lower tile should be ultrasonic inspected: no presence is allowed in the load-bearing area Unbonded area; the flatness of the tile surface after finishing shall not be less than 0.012mm. 4.2.7 The hemisphere is made of finished rolling bearing steel balls with a diameter of 60. The accuracy of the steel balls should comply with Level II of the GB308 standard. After finishing, it meets the following requirements;
a.
h.
The flatness of the processed surface is not less than 0.005mm, and the hemispherical chord height tolerance zone is earth 0.005mm; for surface Flaw detection inspection: Defects such as cracks are not allowed. 4.2.8 The thrust tile seats should be made of 10\ carbon steel plates and should meet the following requirements after finishing; the relative height error of the 11 tile seats in the entire product should be less than 0.01mm; a.
normalized treatment Finally, the hardness difference of the 11 tile seats of the entire product should be less than 5HB. h.
4.3 Assembly technical requirements
The large gear should be subjected to a balance test, and the unbalanced moment is 3.7×10\4G (N·m). 4.3.1
G
Gravity.N.
481
4.3.2 Axial clearance of rolling bearings
JB/T 6124-92
4.3.2.1 Tapered roller bearings (contact angle 3-25°~~ 29°) shall comply with the provisions of JB/ZQ4000.9. 4.3.2.2 The axial clearance of the radial thrust ball bearing (contact angle 340°) shall comply with the provisions of JB/ZQ4000.9. 4.3.3 All parts should be cleaned carefully before assembly, and the unprocessed surfaces of all parts inside and outside the box should be painted according to the provisions of JB/ZQ1 (000.10). 4.3.4 After the joint surfaces of the upper and lower body are finished, the box should be ready for assembly. Use a cold ruler to check that the clearance does not allow 0.05mm to pass through 1/3 of the width of the joint surface.
4.3.5 The minimum normal backlash of the gear pairs at all levels should comply with the requirements of Table 8.
Level
Speciality
Minimum normal side clearance jmi
First level
300
4.3.6 Tooth surface contact spots should be Comply with 4.2.2.6 requirements. First level
320
4.3.7 Cleanliness of the reducer: The mass of dirt filtered by a 400-degree filter should not exceed 4465mg. Level
120
4.4 All raw materials and standard parts should comply with relevant national standards or professional standards. Outsourced accessories must have a manufacturing certificate. 4.5 Reducer lubrication
The reducer adopts centralized circulation lubrication. The lubricating oil is N320 medium load industrial gear oil. um
4.6 As long as the user abides by the conditions of storage, storage, installation, use and maintenance. Within 18 months from the date of putting into use or 24 months from the date of shipment of the reducer, due to poor manufacturing quality Damage occurs. The manufacturer is responsible for repair or replacement. 5 Test methods and inspection rules
5.1 The reducer shall undergo an acceptance test after being assembled and the specified amount of lubricating oil shall be injected into the box during the test. And connect the lubrication system according to the design requirements.
5.2 Factory test and type test
5.2.1 The factory test shall be at rated speed, with the specified human axis running continuously in one direction clockwise for 8 hours. The test shall meet the following requirements: a.|| tt||h.
c.
d.
e.
f.
g.
Operation is smooth and normal, no Impact and abnormal noise; the pressure of the lubrication system is normal, each lubrication point is fully lubricated, and there must be no oil leakage in each shaft head, oil pipe and joint part: the temperature rise of each part must not exceed 30C:
All connectors and fasteners It must not be loose;
The tooth surface contact spots should meet the requirements of 4.2.2.6; the backlash of the gear pairs at all levels should meet the requirements of 4.3.5. The cleanliness of the reducer should meet the requirements of 4.3.7. 5.2.2 | | tt | ° times, it can also be carried out through industrial testing at the use site. The specific requirements are implemented according to factory regulations. The test should meet the following requirements: a.
h.
phenomenon;
c.| |tt||d.
e.
f.
g.
h.
482
Operation is smooth and normal, no Impact and abnormal noise; the oil pressure at the outlet of the lubrication system shall not be less than 0.1MPa. Each lubrication point is fully lubricated, and each shaft head, oil pipe and each joint surface must not have oil leakage. All connectors and fasteners must not be loose:
The temperature rise in the box should not be higher than 35C, and the temperature rise of the bearing should not be higher than 40 (: Noise is not greater than 85dB(A)) One-way amplitude is not less than 0.03mm; tooth surface contact spots should meet the requirements of 4.2.2.6; the cleanliness of the reducer should meet the requirements of 4.3.7; the efficiency of the reducer should reach 4.1 .2 requirements
5.3 Inspection rules
JB/T 6124-- 92
For batch-produced reducers, random inspections should be carried out regularly or irregularly, generally 10% should be randomly inspected .If the random inspection fails, another 20)% should be randomly inspected. If still unqualified, all should be inspected. If there are less than 10 units, one unit should be randomly inspected. Reducers that meet the following requirements are deemed to be qualified for acceptance; a.
h.
d.
e.
f.
conforms to this standard type and Technical requirements;
Noise, temperature rise, inspection data are qualified;
The cleanliness and sealing of the reducer are qualified; the tooth surface contact spots are qualified:
The appearance is smooth and beautiful;|| tt||The random files are complete.
6 Marking, transportation and storage
6.1
Each reducer should have a product nameplate fixed in a prominent position. The nameplate content includes: a.
b.||tt ||c.
d.
e.
f.
h.
Manufacturer name and trademark;
Name and Model number;
Overall transmission ratio:
Rated output torque;
Maximum input speed;
Quality;
Dehuang number: ||tt| |The year and month.
The reducer is packaged and shipped according to the shipping details and packing list. 6.2
6.3 All exposed machining surfaces and non-painted surfaces of each part should be coated with anti-rust oil. The shaft extension and coupling parts should be oiled and packed with plastic sheets to prevent corrosion and damage. Use volatile anti-rust oil inside the reducer to prevent rust. The anti-corrosion method should ensure that the reducer is free from rust within one year.
For rusted gears, they must be rust-removed, and the trial run must meet the acceptance standards before they can work normally. 6.4 Technical documents supplied with the machine:
Overview of the reducer:
a.||tt ||Lubrication system diagram:
b.
c.
Installation and operating instructions;
d.
Packing list:
e.
Competency certificate.
6.5 The reducer should be stored in a rain-proof warehouse. The storage unit should be regularly inspected to prevent corrosion and replaced or supplemented as needed. Additional notes:
This standard is proposed and managed by the Mining Machinery Research Institute of the Mechanical and Electronics Industry. This standard is drafted by Luoyang Mining Machinery Factory. The main drafters of this standard: Xu Weimin and Liu Xuepeng. 483
Comply with the type and technical requirements of this standard;
Noise, temperature rise, and inspection data are qualified;
The cleanliness and sealing of the reducer are qualified; tooth surface contact spots are qualified:|| tt||The appearance is smooth and beautiful;
The random files are complete.
6 Marking, transportation, storage
6.1
Each reducer should have a product nameplate fixed in a prominent position. The nameplate content includes: a.
b.|| tt ||c.
d.
e.
f.
h.
Manufacturer name and trademark;
Name and model;
Total transmission ratio:
Rated output torque;
Maximum input speed;
Quality;
Dehuang number: ||tt | |The year and month.
The reducer is packaged and shipped according to the shipping details and packing list. 6.2
6.3 All exposed machining surfaces and non-painted surfaces of each part should be coated with anti-rust oil. The shaft extension and coupling parts should be oiled and packed with plastic sheets to prevent corrosion and damage. Use volatile anti-rust oil inside the reducer to prevent rust. The anti-corrosion method should ensure that the reducer is free from rust within one year.
For rusted gears, they must be rust-removed, and the trial run must meet the acceptance standards before they can work normally. 6.4 Technical documents supplied with the machine:
Overview of the reducer:
a.||tt ||Lubrication system diagram:
b.
c.
Installation and operating instructions;
d.
Packing list:
e.
Competency certificate.
6.5 The reducer should be stored in a rain-proof warehouse. The storage unit should be regularly inspected to prevent corrosion and replaced or supplemented as needed. Additional notes:
This standard is proposed and managed by the Mining Machinery Research Institute of the Mechanical and Electronics Industry. This standard is drafted by Luoyang Mining Machinery Factory. The main drafters of this standard: Xu Weimin and Liu Xuepeng. 483
Comply with the type and technical requirements of this standard;
Noise, temperature rise, and inspection data are qualified;
The cleanliness and sealing of the reducer are qualified; tooth surface contact spots are qualified:|| tt||The appearance is smooth and beautiful;
The random files are complete.
6 Marking, transportation, storage
6.1
Each reducer should have a product nameplate fixed in a prominent position. The nameplate content includes: a.
b.|| tt ||c.
d.
e.
f.
h.
Manufacturer name and trademark;
Name and model;
Total transmission ratio:
Rated output torque;
Maximum input speed;
Quality;
Dehuang number: ||tt | |The year and month.
The reducer is packaged and shipped according to the shipping details and packing list. 6.2
6.3 All exposed machining surfaces and non-painted surfaces of each part should be coated with anti-rust oil. The shaft extension and coupling parts should be oiled and packed with plastic sheets to prevent corrosion and damage. Use volatile anti-rust oil inside the reducer to prevent rust. The anti-corrosion method should ensure that the reducer is free from rust within one year.
For rusted gears, they must be rust-removed, and the trial run must meet the acceptance standards before they can work normally. 6.4 Technical documents supplied with the machine: bzxZ.net
Overview of the reducer:
a.||tt ||Lubrication system diagram:
b.
c.
Installation and operating instructions;
d.
Packing list:
e.
Competency certificate.
6.5 The reducer should be stored in a rain-proof warehouse. The storage unit should be regularly inspected to prevent corrosion and replaced or supplemented as needed. Additional notes:
This standard is proposed and managed by the Mining Machinery Research Institute of the Mechanical and Electronics Industry. This standard is drafted by Luoyang Mining Machinery Factory. The main drafters of this standard: Xu Weimin and Liu Xuepeng. 483
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