Some standard content:
Machinery Industry Standard of the People's Republic of China
ZJY shaft-mounted cylindrical gear reducer
Subject content and scope of application
JB/T7007--- 93
This standard stipulates The type and size, basic parameters, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements of the ZIY shaft-mounted cylindrical gear reducer (hereinafter referred to as the reducer) are specified. This standard applies to ZY-type shaft-mounted reducers with parallel shafts and involute cylindrical gears with zigzag axes. It is mainly used for driving devices of belt conveyors and bucket elevators, and can also be used for transmission devices of other types of mechanical equipment. The speed of the high-speed shaft is not greater than 1500r/min; the working environment temperature is -40~+40(, and when it is lower than 5(), the lubricating oil should be preheated to 10(above) before moving, bzxZ.net
2 quoted standards || tt || GB 1184 | | tt | |tt||Batch-by-batch inspection and counting sampling procedures and sampling tables (applicable to continuous batch inspection) Determination method of noise and sound power level of gear devices Gray cast iron parts
GB 10095
Accuracy of involute cylindrical gears
GB11368 Cleanliness of Gear Transmissions
GB/T13384 General Technical Conditions for Mechanical and Electrical Product Packaging 3 Types and Dimensions
3.1 The assembly type and overall dimensions of the reducer should comply with Figure 1 and Table 1 Regulations. Approved by the Ministry of Machinery Industry of the People's Republic of China on 1993-09-03
implemented on 1994-07-07
IB/T 7007-93
4
tong
'
052-089
05208
012-089
012085
～
8808||tt| |088~0
08
08
080
891
911
G
2||tt| |2
2
991
81
to
8
t９
oot
8
5
心
1
8
25
[
on
001|| tt||62
S
2
E
Picture
9
204
5||tt| |'
OEs
9
628
9.101
298
2
0o
H
2
28
097
099
968
6
8
'8| |tt||*9
2
0
c
6
0
5
8|| tt||0
:
5
p
EAT
z
18
A1Z||tt| |sot
0
AIZ
AZ
No.
Type
169
JB/T 7007||tt ||3.2 The input shaft extension of the reducer should comply with the provisions of GB1569 3.3 Product marking
ZJY
Standard number
93
Rotating square code: divided into two Three nominal transmission ratios: direction (L), counterclockwise (N), clockwise (S)
Low speed stage center distance, mm
Product type code: Y represents hard tooth surface||tt| |Marking example:
Low speed stage center distance a=180mm, nominal transmission ratio i=20. Counterclockwise rotating hard tooth surface shaft-mounted reducer: ZJY 180. 20V
4 basic parameters| |tt||The gear transmission center distance of the reducer should comply with the requirements in Table 2. 4.1
JB/T 7007.--93
2
low speed grade α?
high speed grade α,
4.2
75
53
90
63
106
75
125
90
150|| tt||106
180
125
212
150
250
180
mm||tt| |300
212
The nominal transmission ratio of the reducer should comply with the provisions of Table 3. The relative error between the actual transmission ratio of the reducer and the nominal transmission ratio is not greater than 4. Table 3
Nominal transmission ratio:
5
Technical requirements
5.1 Usage performance|| tt||10
The nominal input power of the reducer should comply with the regulations of PEI 4. 5.1.1
16
Table 4
Nominal transmission ratio
Nominal speed
r/min
ZJY 75||tt| |ZJY90
ZIY106
type
170
ZJY125
ZJY150
ZJY180
ZJY 212
ZJY250
ZJY 300
Input n
Output n2
Nominal output
People power/
kw
10
15001000
150
2.8
4.6
17.6
12.6
100
1.9|| tt||3.1
5.1
8.4
21.5
14.3
36.0
60.3
24,0|| tt||40.2
67,3
750
75
.4
2.3
3.8
6.3| |tt||10.8
18.0
30.2
50.5
1500
94
2.5
4.1||tt ||6.8
11.4
19.3
32.
.
90.
16
1000||tt ||1.7
2.7
7. G
35.9
750)
47
h.:
20
500
75
20
1000
750
38
3. 5
. 5
.
25
25
15001
000
60
5
30| |tt||0.5
3.6
JB/T 7007-93
The rated backstop torque of the reducer backstop should comply with the provisions of Table 5 5.1.2||tt| |Table 5
Type
Backstop torque
ZJY75
19
ZJY90
30
ZJY106||tt ||49
5.1.3
The total transmission efficiency of the reducer should not be less than 0.95. 5. 1.4
ZJY125
81
ZJY150
137
The noise value (sound pressure level) under the rated load of the reducer should comply with the provisions of Table 6. Table 6
Type
Voice value
ZJY 75~ZJY 150
75
ZJY180
230
5.1 .5 The average service life of the reducer is not less than 25000h, and the bearing life is not less than 10000hZIY 212
ZIY250
384
6543
Nm
ZIY300| |tt||715
dB(A)
ZJY180~ZJY300
8G
5.1.6 Under normal use conditions, the maximum temperature rise of the reducer shall not be greater than 60C , the maximum temperature of the oil pool is not greater than 80 (5.2 Chassis
5.2.1 Cast iron parts are used, and their mechanical properties are not lower than HT200 in GB9439. Welding parts are allowed, 5.2.2 Castings or welding parts should be Aging treatment. 5.2.3 The surface roughness parameter R of the opening and closing surfaces is 3.2um. 5.2.4 When the front and rear casings are packed together, the opening and closing surfaces should be tightly closed, and the insertion depth should not exceed 0.05mm. One minute of the joint width.
5.2.5
5 After the front and rear casings are combined, the misalignment on each side should be less than 4mm. 5.2.6
The center distance limit of the bearing holes. The deviation should comply with the requirements of Table 7
center distance α
mm
limit deviation
ur
>50~80
23
380-- 120
120-180
31.5
5.2.7 The verticality between the center line of the bearing hole and the end face of the casing is not less than 8 in GB1184 Level. 5.2.8 The casing is not allowed to leak oil.
5.3 Gears and shaft gears
2180~250
36
2250 ~ 315
40.5
5.3.1 The materials, heat treatment and mechanical properties of gears and shafts are allowed to be made of materials with equivalent or higher mechanical properties.
Qiu 8|| tt||Heat treatment
Material grade
20crMnTi
200rMnMo:
Carburizing fire, tempering
Carburizing fire, tempering||tt ||The sample cross-section is at
mm
15
E5
G,/(N/nim*)
834
883
Mechanical properties
Machine
h
./(N/mm\)
1079
1177
171
JB/T 7007...93
5.3.2 The gear tooth surface is carburized and quenched, the tooth surface hardness is 58~-62HR, and the effective hardened layer depth of the tooth is (0.1). 2) 2 shall not be less than 0.3mm, and H shall not have cracks
5.3.3 The accuracy of the gear should comply with the provisions of level 7-6-6 in B10095, the gear tooth working surface roughness parameter, and the K value is 1.6 um5.3.4 The monthly combination of inspection items for gears should comply with the requirements in Table 9, and their values ??should comply with the requirements in GB10095. Equivalent sets of other inspection items are allowed.
Table 9
Accuracy level
7-6-6
Tolerance group 1
F. or F, F%
Inspection
th『Tolerance group
f and or f a
Inspection
th! Tolerance button
F
5.3.5 Bearing hole center line parallelism tolerance, measured on the bearing span, shall not be greater than the requirements of Table 10 Table 10
Bearing span||tt| |mm
Parallelism Tolerance
jum
5.4 Assembly
.125
20
125-280
23
5.4.1 The inner ring of the bearing must be close to the shaft shoulder or distance ring, and it must be checked with a 0.05mm feeler gauge. 5.4.2 Turn the shaft by hand, and the bearing must run briskly and flexibly. 5.4.3 The minimum clearance of gear transmission should comply with the requirements in Table 11. Table 11
center distance
mm
minimum gap uin
fatm
80
120
80-125| |tt||140
-125-.180
160
:180250
185
meat
wheel||tt| |Vice
Contact spot
280~~550
32
256--31
21.
5.4.4 Gear surface The contact spot (contact rate) should not be less than 60% along the tooth height direction, and should not be less than 80% along the tooth length direction. The tooth direction modification area and the tooth top modification area at both ends of the teeth do not include the human contact area. It is allowed to inspect the contact spots under rated load. 5.4.5 Cleanliness of the reducer | The lubrication and cooling of gears and bearings adopt oil pool splash lubrication and natural cooling. 5.5.2 The grade (viscosity) of the lubricating oil is selected according to the peripheral speed of the high-speed gear: when ≤2.5m/s, or when the ambient temperature is higher than 35 (. Select medium load T industrial gear oil N320. When 2.5m/s- Use towel-loaded industrial gear oil N220. 5.6 Appearance
The inner surface of the casing and the unprocessed surfaces of other parts are painted with white oil-resistant paint, the outer surface of the casing is painted with primer and beautiful-colored paint, and the shaft extension is coated with anti-rust oil| |tt||172
6 test methods
6.1 no-load test
JB/T 7007-93
6.1.1 The reducer must undergo no-load test, test Inject enough lubricating oil according to the given oil level: during the test, run in both forward and reverse directions for 1 hour (the reducer with a backstop device only operates in one direction) ||tt| |All connections and fasteners must not be loose;
a.
All seals and joints must not be oily;
h.
c.||tt ||d.
The operation is smooth and normal, without impact and normal noise; the lubrication is sufficient, and the temperature rise of the bearing and oil should not exceed 40). 6.2 Load test
6.2.11
Only after passing the no-load test, the load test can be carried out. At the rated speed, the loading is divided into 25%, 50%, 75% and 100% of the rated load. Until 10mi6.2.2
after each level of load reaches temperature balance.
6.2.3
Required measurement:
a.
b.
c.
d.
e .
f.
Power;
Speed ??and running time:
Transmission efficiency;
Bearing, oil pool temperature, temperature rise;||tt ||Noise;
Tooth surface contact rate, gear damage.
6.3 Overload test
Conduct an overload test after passing the load test. at rated speed. Run at 120% and 150% of the rated load for 1 minute each, and run at 180% of the rated load for 0.5 minutes. Each part of the reducer must not be damaged. The overload test should be performed after starting. Brake after unloading. 6.4 Fatigue life test
Under rated load, the number of stress cycles of high-speed gears is 5×10". To inspect the damage of gears and other parts, it is allowed to use industrial application tests instead of fatigue life tests, but the actual load of industrial applications must To reach the rated load, the test time shall not be less than 3600h.
6.5 Backstop performance test
Fix the output shaft of the reducer, and load the input shaft according to the rated backstop torque in Table 5 for load bearing Test 1000 times, the test backstop device should be reliable.
6.6 Noise test shall be carried out in accordance with GB6404.
6.7 Cleanliness measurement method shall be in accordance with GB11368. 7 Inspection rules
The reducer can only leave the factory after passing the inspection by the manufacturing inspection department. 7.1
7.2 Factory inspection items of the reducer:
a.
b.
c.
d.
e.
f.
Appearance;
No-load operation:
Reverse Stop performance;
Noise land:
Cleanliness;
Gear accuracy.
173
JB/T7007.93
Among them, backstop performance, noise, cleanliness, and gear accuracy are random inspection items. Sampling is carried out according to the production batch and in accordance with GB2828. The inspection level is 1. The AQI value is 6.5. If the random inspection fails, a re-inspection shall be carried out. The AQL value of the re-inspection shall be 2.5. If the re-inspection fails, a full inspection shall be carried out. 7.3 Type testing shall be carried out in the following situations:
New product trial formulation and identification;
a.|| tt||b.
When there are major changes in structure, materials, and processes after formal production; when the national quality supervision agency proposes type testing requirements. c.
7.4 The type test items of the reducer include all the contents specified in Chapter 6 8
Marking, packaging, transportation, purchase and storage
The reducer should have a fixed sign in a conspicuous position, and the sign Content includes: 8.1
a.
b.
.
d.
e.
Product name and model: || tt||Nominal input power;
Nominal transmission ratio:
Quality;
Manufacturing name;
f.
Manufacturing target;
g.
8.2
Factory compiled.
The shaft extension of the reducer should be coated with anti-rust oil before packaging; packaging should comply with the regulations of GH/T13384. The operating instructions, certificate of conformity, packing list and other random documents of the reducer should be sealed in plastic bags and placed in the packaging box. 8.3
During the transportation and installation process, the product should be stabilized and put down slowly to ensure that the product is not damaged. 8.4 The reducer should be stored in a clean place that can prevent rain, snow and water erosion. 1.74
A1
Nominal thermal power P1
JB/T7007-·93
Record
Attachment
Ａ
Reducer selection instructions
(reference part)
ZJY shaft-mounted cylindrical gear reducer nominal power P calculated based on mechanical strength, see Table 4 in the standard text, according to the maximum allowable lubricating oil The nominal thermal power P for equilibrium temperature calculation is shown in Table A1. Table A1
Type
P,/kw
A2
ZJY75
3.1
Reducer selection coefficient
ZJY 90
1.4
ZJY 106
6.2
The working condition coefficient K of the A2.1 reducer is shown in Figure A1. Meitian working hours
24'|16\|8'
1.81
1.7
1.6
1.7
1.6||tt ||1.5
1.3
1.5
1.
1.3
1.2
1. 1
.|| tt||1.0
1. 2/ 1. 0 0. 8l
ZJY 125
ZIY150
11.2
ZJY180
15.8
100 200 300 400 500 600 700 800 900 1000Z1Y 212
23.1
1200
Number of starts per hour
Figure A1
ZJY 250 | Load; II-moderate impact load; III-strong impact load. For example, the load property is I, starting 200 times per hour and operating I 24 hours a day. According to the chart, the working condition coefficient KA2.2 and the ambient temperature coefficient are shown in Table A2.
Table A2
Cooling conditions
No cooling in
10
0. 9
20
Ambient temperature C
30
1.1
40
1.2
1.35,
ZrY s0
42.3
sn
175
A2.3 Load rate coefficient f is shown in Table A3.
Hour load rate/%
Load factor factory:
100
JB/T 7007-..93
Table A3
80
0. 94
The nominal power utilization coefficient of the reducer is shown in Table A4. A2.4
Length A4
x1
30%
1. 5
40%
1.25
50 %
1.15
Note: P,·nominal power, see Table 4 in the standard text: I\.·Load power. Selection of A3 reducer
60
0.86
60%
1.1
40
0.74
70%| |tt||1. 05
30
The carrying capacity of the standard reducer is limited by the mechanical strength and the thermal balance allowable power. Therefore, the selection of the reducer must go through two power tables .
First, select according to the mechanical strength of the reducer and the allowable nominal power. If the relative error between the practical input speed of the reducer and one of the three speeds (1500, 1000, 750) in the load-carrying capacity table is not If the speed error exceeds 4%, the reducer of corresponding specifications can be selected according to the nominal power at that speed: if the speed error exceeds 4%, the nominal power of the reducer should be converted into the practical speed and selected. Then check the heat balance allowable power of the reducer.
: A belt conveyor reducer, motor driven, motor speed n=1460r/min, transmission ratio i=20. Transmission power >15kW. Daily labor cost 24h, maximum ambient temperature 35 (. Natural ventilation cooling , oil pool lubrication requires the selection of a standard reducer with equivalent specifications. Step 1: Select according to the mechanical strength and power table of the reducer. ...Generally, the labor condition coefficient KA must be calculated. In special cases, the safety factor ||tt| |The load of the belt conveyor is medium impact, check Figure A1, take K.2 1.5 to calculate the power: Pm-P·K.=1.5×15-22.5kW
Press i=20 and n1500r/min. Check the table 1: ZJY180, i=20, n=1500r/min, P:--24kW when n,=l460r/min. Converted nominal power: P,-1460/i500x24=23.4kW
Pzm=22.5kWP , -23.4kW. You can choose the ZJY180-20 reducer. Step 1: To check whether the thermal power P2 can pass, the factor F2F should be satisfied: P·f·f2·fPc
Look up the table. A2, Table A3 and Table A4:
J 1.15;f,—1;f--1.08(15/23.4-64%)P..=P:·f:·fz·fs=15kW× 1.15 x 1 Proposed by the Heavy Machinery Research Institute [1. This standard is sponsored by Maan IH Transmission Machinery Factory 176
b.
When there are major changes in structure, materials, and processes after formal production; when the national quality supervision agency proposes type testing requirements. c.
7.4 The type test items of the reducer include all the contents specified in Chapter 6 8
Marking, packaging, transportation, purchase and storage
The reducer should have a fixed sign in a conspicuous position, and the sign Content includes: 8.1
a.
b.
.
d.
e.
Product name and model: || tt||Nominal input power;
Nominal transmission ratio:
Quality;
Manufacturing name;
f.
Manufacturing target;
g.
8.2
Factory compiled.
The shaft extension of the reducer should be coated with anti-rust oil before packaging; packaging should comply with the regulations of GH/T13384. The operating instructions, certificate of conformity, packing list and other random documents of the reducer should be sealed in plastic bags and placed in the packaging box. 8.3
During the transportation and installation process, the product should be stabilized and put down slowly to ensure that the product is not damaged. 8.4 The reducer should be stored in a clean place that can prevent rain, snow and water erosion. 1.74
A1
Nominal thermal power P1
JB/T7007-·93
Record
Attachment
Ａ
Reducer selection instructions
(reference parts)
ZJY shaft-mounted cylindrical gear reducer nominal power P calculated based on mechanical strength, see Table 4 in the standard text, according to the maximum allowable lubricating oil The nominal thermal power P for equilibrium temperature calculation is shown in Table A1. Table A1
Type
P,/kw
A2
ZJY75
3.1
Reducer selection coefficient
ZJY 90
1.4
ZJY 106
6.2
The working condition coefficient K of the A2.1 reducer is shown in Figure A1. Meitian working hours
24'|16\|8'
1.81
1.7
1.6
1.7
1.6||tt ||1.5
1.3
1.5
1.
1.3
1.2
1. 1
.|| tt||1.0
1. 2/ 1. 0 0. 8l
ZJY 125
ZIY150
11.2
ZJY180
15.8
100 200 300 400 500 600 700 800 900 1000Z1Y 212
23.1
1200
Number of starts per hour
Figure A1
ZJY 250 | Load; II-moderate impact load; III-strong impact load. For example, the load property is I, starting 200 times per hour and operating I 24 hours a day. According to the chart, the working condition coefficient KA2.2 and the ambient temperature coefficient are shown in Table A2.
Table A2
Cooling conditions
No cooling in
10
0. 9
20
Ambient temperature C
30
1.1
40
1.2
1.35,
ZrY s0
42.3
sn
175
A2.3 Load rate coefficient f is shown in Table A3.
Hour load rate/%
Load factor factory:
100
JB/T 7007-..93
Table A3
80
0. 94
The nominal power utilization coefficient of the reducer is shown in Table A4. A2.4
Length A4
x1
30%
1. 5
40%
1.25
50 %
1.15
Note: P,·nominal power, see Table 4 in the standard text: I\.·Load power. Selection of A3 reducer
60
0.86
60%
1.1
40
0.74
70%| |tt||1. 05
30
The carrying capacity of the standard reducer is limited by mechanical strength and thermal balance allowable power. Therefore, the selection of the reducer must go through two power tables .
First, select according to the mechanical strength of the reducer and the allowable nominal power. If the relative error between the practical input speed of the reducer and one of the three speeds (1500, 1000, 750) in the load-carrying capacity table is not If the speed error exceeds 4%, the reducer of corresponding specifications can be selected according to the nominal power at that speed: if the speed error exceeds 4%, the nominal power of the speed reducer should be converted into the actual speed and selected. Then check the heat balance allowable power of the reducer.
: A belt conveyor reducer, motor driven, motor speed n=1460r/min, transmission ratio i=20. Transmission power >15kW. Daily labor cost 24h, maximum ambient temperature 35 (. Natural ventilation cooling , oil pool lubrication requires the selection of a standard reducer with equivalent specifications. Step 1: Select according to the mechanical strength and power table of the reducer. ...Generally, the labor condition coefficient KA must be calculated. In special cases, the safety factor ||tt| |The load of the belt conveyor is medium impact, check Figure A1, take K.2 1.5 to calculate the power: Pm-P·K.=1.5×15-22.5kW
According to i=20 and n1500r/min. Check the table 1: ZJY180, i=20, n=1500r/min, P:--24kW. When n,=l460r/min. Converted nominal power: P,-1460/i500x24=23.4kW
Pzm=22.5kWP , -23.4kW. You can choose the ZJY180-20 reducer. Step 1: To check whether the thermal power P2 can pass, the factor F2F should be satisfied: P·f·f2·fPc
Look up the table. A2, Table A3 and Table A4 are:
J 1.15;f,—1;f--1.08(15/23.4-64%)P..=P:·f:·fz·fs=15kW× 1.15 x 1 Proposed by the Heavy Machinery Research Institute [1. This standard is sponsored by Maan IH Transmission Machinery Factory 176
b.
When there are major changes in structure, materials, and processes after formal production; when the national quality supervision agency proposes type testing requirements. c.
7.4 The type test items of the reducer include all the contents specified in Chapter 6 8
Marking, packaging, transportation, purchase and storage
The reducer should have a fixed sign in a conspicuous position, and the sign Content includes: 8.1
a.
b.
.
d.
e.
Product name and model: || tt||Nominal input power;
Nominal transmission ratio:
Quality;
Manufacturing name;
f.
Manufacturing target;
g.
8.2
Factory compiled.
The shaft extension of the reducer should be coated with anti-rust oil before packaging; packaging should comply with the regulations of GH/T13384. The operating instructions, certificate of conformity, packing list and other random documents of the reducer should be sealed in plastic bags and placed in the packaging box. 8.3
During the transportation and installation process, the product should be stabilized and put down slowly to ensure that the product is not damaged. 8.4 The reducer should be stored in a clean place that can prevent rain, snow and water erosion. 1.74
A1
Nominal thermal power P1
JB/T7007-·93
Record
Attachment
Ａ
Reducer selection instructions
(reference part)
ZJY shaft-mounted cylindrical gear reducer nominal power P calculated based on mechanical strength, see Table 4 in the standard text, according to the maximum allowable lubricating oil The nominal thermal power P for equilibrium temperature calculation is shown in Table A1. Table A1
Type
P,/kw
A2
ZJY75
3.1
Reducer selection coefficient
ZJY 90
1.4
ZJY 106
6.2
The working condition coefficient K of the A2.1 reducer is shown in Figure A1. Meitian working hours
24'|16\|8'
1.81
1.7
1.6
1.7
1.6||tt ||1.5
1.3
1.5
1.
1.3
1.2
1. 1
.|| tt||1.0
1. 2/ 1. 0 0. 8l
ZJY 125
ZIY150
11.2
ZJY180
15.8
100 200 300 400 500 600 700 800 900 1000Z1Y 212
23.1
1200
Number of starts per hour
Figure A1
ZJY 250 | Load; II-moderate impact load; III-strong impact load. For example, the load property is I, starting 200 times per hour and operating I 24 hours a day. According to the chart, the working condition coefficient KA2.2 and the ambient temperature coefficient are shown in Table A2.
Table A2
Cooling conditions
No cooling in
10
0. 9
20
Ambient temperature C
30
1.1
40
1.2
1.35,
ZrY s0
42.3
sn
175
A2.3 Load rate coefficient f is shown in Table A3.
Hour load rate/%
Load factor factory:
100
JB/T 7007-..93
Table A3
80
0. 94
The nominal power utilization coefficient of the reducer is shown in Table A4. A2.4
Length A4
x1
30%
1. 5
40%
1.25
50 %
1.15
Note: P,·nominal power, see Table 4 in the standard text: I\.·Load power. Selection of A3 reducer
60
0.86
60%
1.1
40
0.74
70%| |tt||1. 05
30
The carrying capacity of the standard reducer is limited by the mechanical strength and the thermal balance allowable power. Therefore, the selection of the reducer must go through two power tables .
First, select according to the mechanical strength of the reducer and the allowable nominal power. If the relative error between the practical input speed of the reducer and one of the three speeds (1500, 1000, 750) in the load-carrying capacity table is not If the speed error exceeds 4%, the reducer of corresponding specifications can be selected according to the nominal power at that speed: if the speed error exceeds 4%, the nominal power of the reducer should be converted into the practical speed and selected. Then check the heat balance allowable power of the reducer.
: A belt conveyor reducer, motor driven, motor speed n=1460r/min, transmission ratio i=20. Transmission power >15kW. Daily labor cost 24h, maximum ambient temperature 35 (. Natural ventilation cooling , oil pool lubrication requires the selection of a standard reducer with equivalent specifications. Step 1: Select according to the mechanical strength and power table of the reducer. ...Generally, the labor condition coefficient KA must be calculated. In special cases, the safety factor ||tt| |The load of the belt conveyor is medium impact, check Figure A1, take K.2 1.5 to calculate the power: Pm-P·K.=1.5×15-22.5kW
Press i=20 and n1500r/min. Check the table 1: ZJY180, i=20, n=1500r/min, P:--24kW when n,=l460r/min. Converted nominal power: P,-1460/i500x24=23.4kW
Pzm=22.5kWP , -23.4kW. You can choose the ZJY180-20 reducer. Step 1: To check whether the thermal power P2 can pass, the factor F2F should be satisfied: P·f·f2·fPc
Look up the table. A2, Table A3 and Table A4:
J 1.15;f,—1;f--1.08(15/23.4-64%)P..=P:·f:·fz·fs=15kW× 1.15 x 1 Proposed by the Heavy Machinery Research Institute [1. This standard is sponsored by Maan IH Transmission Machinery Factory 176
74
A1
Nominal thermal power P1
JB/T7007-·93
Additional
Appendix
A
Instructions for selection of reducers
(reference)
The nominal power P of ZJY shaft-mounted cylindrical gear reducer calculated according to mechanical strength is shown in Table 4 in the main text of the standard. The nominal thermal power P calculated according to the maximum allowable equilibrium temperature of the lubricating oil is shown in Table A1. Table A1
Type
P,/kw
A2
ZJY75
3.1
Selection coefficient of reducer
ZJY 90
1.4
ZJY 106
6.2
A2.1 Operating coefficient K of reducer, see Figure A1. Meitian working hours
24'|16\|8'
1.81
1.7
1.6
1.7
1.6
1.5
1.3
1.5
1.
1.3
1.2
1. 1
.
1.0
1. 2/ 1. 0 0. 8l
ZJY 125
ZIY150
11.2
ZJY180
15.8
100 200 300 400 500 600 700 800 900 1000Z1Y 212
23.1
1200
Number of starts per hour
Figure A1
ZJY 250
30.7
1500
Before selecting a reducer, the operating condition coefficient must be determined based on the operating hours, the number of starts per hour and the nature of the load. Load nature: Ⅰ-even hook load; Ⅱ-medium impact load; Ⅲ-strong impact load. For example, load nature I, 200 starts per hour. I works 24 hours a day. According to the chart, the operating condition coefficient KA2.2 Ambient temperature coefficient See Table A2.
Table A2
Cooling conditions
No cooling at
10
0. 9
20
Ambient temperature C
30
1.1
40
1.2
1.35,
ZrY s0
42.3
sn
175
A2.3 Load rate factor f see Table A3.
Hourly load rate/%
Load factor factory:
100
JB/T 7007-..93
Table A3
80
0. 94
Reducer nominal power utilization factor, see Table A4. A2.4
Length A4
x1
30%
1. 5
40%
1.25
50%
1.15
Note: P, · Nominal power, see Table 4:I\.· Load power in the standard text. Selection of A3 reducer
60
0.86
60%
1.1
40
0.74
70%
1. 05
30
The load-bearing capacity of standard reducers is limited by mechanical strength and thermal balance allowable power. Therefore, the selection of reducers must pass two power tables.
First, select according to the mechanical strength allowable nominal power of the reducer: If the relative error between the practical input speed of the reducer and one of the three speeds (1500, 1000, 750) in the load capacity table does not exceed 4%, the reducer of corresponding specifications can be selected according to the nominal power at that speed: If the speed error exceeds 4%, the nominal power of the reducer should be converted according to the practical speed. Then check the thermal balance allowable power of the reducer.
: A belt conveyor reducer, driven by an electric motor, with a motor speed of n=1460r/min, a transmission ratio of i=20. The transmission power is >15kW. The daily labor cost is 24h, and the maximum ambient temperature is 35 (. Natural ventilation cooling, oil pool lubrication, and the standard reducer with equivalent specifications is required. The first step: select according to the mechanical strength power table of the reducer. ... In general, the artificial condition factor KA should be calculated, and the safety factor should be considered in special cases.
The belt conveyor load is medium impact. Check Figure A1 and take K.=1.5 to calculate the power: Pm-P·K.=1.5×15-22.5kW||tt ||According to i=20 and n1500r/min. Check Table 1: ZJY180, i=20, n=1500r/min, P:--24kW. When n=l460r/min. Convert nominal power: P,-1460/i500x24=23.4kW
Pzm=22.5kWP,-23.4kW. You can choose ZJY180-20 type reducer. Step 1: Check whether the thermal power P2 can pass the human factor, F2F: It should meet: P·f·f2·fPc
Check Table A2, Table A3, Table A4 to get:
J 1.15;f,—1;f--1.08(15/23.4-64%)P..=P：·f:·fz·fs=15kW×1.15×1×1.08=18.63kw>Pc cannot use ZJY180-20 type reducer, then need to choose a larger size reducer. Recalculate according to the above procedure Additional notes:
This standard is proposed and approved by Xi'an Heavy Machinery Research Institute of the Ministry of Machinery Industry. This standard is under the responsibility of Ma'an IH Transmission Machinery Factory. 176
74
A1
Nominal thermal power P1
JB/T7007-·93
Record
Attachment
Ａ
Reducer selection instructions
(reference part)
ZJY shaft-mounted cylindrical gear reducer nominal power P calculated based on mechanical strength, see Table 4 in the standard text, according to the maximum allowable lubricating oil The nominal thermal power P for equilibrium temperature calculation is shown in Table A1. Table A1
Type
P,/kw
A2
ZJY75
3.1
Reducer selection coefficient
ZJY 90
1.4
ZJY 106
6.2
The working condition coefficient K of the A2.1 reducer is shown in Figure A1. Meitian working hours
24'|16\|8'
1.81
1.7
1.6
1.7
1.6||tt ||1.5
1.3
1.5
1.
1.3
1.2
1. 1
.|| tt||1.0
1. 2/ 1. 0 0. 8l
ZJY 125
ZIY150
11.2
ZJY180
15.8
100 200 300 400 500 600 700 800 900 1000Z1Y 212
23.1
1200
Number of starts per hour
Figure A1
ZJY 250 | Load; II-moderate impact load; III-strong impact load. For example, the load property is I, starting 200 times per hour and operating I 24 hours a day. According to the chart, the working condition coefficient KA2.2 and the ambient temperature coefficient are shown in Table A2.
Table A2
Cooling conditions
No cooling in
10
0. 9
20
Ambient temperature C
30
1.1
40
1.2
1.35,
ZrY s0
42.3
sn
175
A2.3 Load rate coefficient f is shown in Table A3.
Hour load rate/%
Load factor factory:
100
JB/T 7007-..93
Table A3
80
0. 94
The nominal power utilization coefficient of the reducer is shown in Table A4. A2.4
Length A4
x1
30%
1. 5
40%
1.25
50 %
1.15
Note: P,·nominal power, see Table 4 in the standard text: I\.·Load power. Selection of A3 reducer
60
0.86
60%
1.1
40
0.74
70%| |tt||1. 05
30
The carrying capacity of the standard reducer is limited by the mechanical strength and the thermal balance allowable power. Therefore, the selection of the reducer must go through two power tables .
First, select according to the mechanical strength of the reducer and the allowable nominal power. If the relative error between the practical input speed of the reducer and one of the three speeds (1500, 1000, 750) in the load-carrying capacity table is not If the speed error exceeds 4%, the reducer of corresponding specifications can be selected according to the nominal power at that speed: if the speed error exceeds 4%, the nominal power of the reducer should be converted into the practical speed and selected. Then check the heat balance allowable power of the reducer.
: A belt conveyor reducer, motor driven, motor speed n=1460r/min, transmission ratio i=20. Transmission power >15kW. Daily labor cost 24h, maximum ambient temperature 35 (. Natural ventilation cooling , oil pool lubrication requires the selection of a standard reducer with equivalent specifications. Step 1: Select according to the mechanical strength and power table of the reducer. ...Generally, the labor condition coefficient KA must be calculated. In special cases, the safety factor ||tt| |The load of the belt conveyor is medium impact, check Figure A1, take K.2 1.5 to calculate the power: Pm-P·K.=1.5×15-22.5kW
Press i=20 and n1500r/min. Check the table 1: ZJY180, i=20, n=1500r/min, P:--24kW when n,=l460r/min. Converted nominal power: P,-1460/i500x24=23.4kW
Pzm=22.5kWP , -23.4kW. You can choose the ZJY180-20 reducer. Step 1: To check whether the thermal power P2 can pass, the factor F2F should be satisfied: P·f·f2·fPc
Look up the table. A2, Table A3 and Table A4:
J 1.15;f,—1;f--1.08(15/23.4-64%)P..=P:·f:·fz·fs=15kW× 1.15 x 1 Proposed by the Heavy Machinery Research Institute [1. This standard is sponsored by Maan IH Transmission Machinery Factory 176
94
The nominal power utilization coefficient of the reducer is shown in Table A4. A2.4
Length A4
x1
30%
1. 5
40%
1.25
50 %
1.15
Note: P,·nominal power, see Table 4 in the standard text: I\.·Load power. Selection of A3 reducer
60
0.86
60%
1.1
40
0.74
70%| |tt||1. 05
30
The carrying capacity of the standard reducer is limited by the mechanical strength and the thermal balance allowable power. Therefore, the selection of the reducer must go through two power tables .
First, select according to the mechanical strength of the reducer and the allowable nominal power. If the relative error between the practical input speed of the reducer and one of the three speeds (1500, 1000, 750) in the load-carrying capacity table is not If the speed error exceeds 4%, the reducer of corresponding specifications can be selected according to the nominal power at that speed: if the speed error exceeds 4%, the nominal power of the speed reducer should be converted into the practical speed and selected. Then check the heat balance allowable power of the reducer.
: A belt conveyor reducer, motor driven, motor speed n=1460r/min, transmission ratio i=20. Transmission power >15kW. Daily labor cost 24h, maximum ambient temperature 35 (. Natural ventilation cooling , oil pool lubrication requires the selection of a standard reducer with equivalent specifications. Step 1: Select according to the mechanical strength and power table of the reducer. ...Generally, the labor condition coefficient KA must be calculated. In special cases, the safety factor ||tt| |The load of the belt conveyor is medium impact, check Figure A1, take K.2 1.5 to calculate the power: Pm-P·K.=1.5×15-22.5kW
Press i=20 and n1500r/min. Check the table 1: ZJY180, i=20, n=1500r/min, P:--24kW when n,=l460r/min. Converted nominal power: P,-1460/i500x24=23.4kW
Pzm=22.5kWP , -23.4kW. You can choose the ZJY180-20 reducer. Step 1: To check whether the thermal power P2 can pass, the factor F2F should be satisfied: P·f·f2·fPc
Look up the table. A2, Table A3 and Table A4:
J 1.15;f,—1;f--1.08(15/23.4-64%)P..=P:·f:·fz·fs=15kW× 1.15 x 1 Proposed by the Heavy Machinery Research Institute [1. This standard is sponsored by Maan IH Transmission Machinery Factory 176
94
The nominal power utilization coefficient of the reducer is shown in Table A4. A2.4
Length A4
x1
30%
1. 5
40%
1.25
50 %
1.15
Note: P,·nominal power, see Table 4 in the standard text: I\.·Load power. Selection of A3 reducer
60
0.86
60%
1.1
40
0.74
70%| |tt||1. 05
30
The carrying capacity of the standard reducer is limited by the mechanical strength and the thermal balance allowable power. Therefore, the selection of the reducer must go through two power tables .
First, select according to the mechanical strength of the reducer and the allowable nominal power. If the relative error between the practical input speed of the reducer and one of the three speeds (1500, 1000, 750) in the load-carrying capacity table is not If the speed error exceeds 4%, the reducer of corresponding specifications can be selected according to the nominal power at that speed: if the speed error exceeds 4%, the nominal power of the reducer should be converted into the practical speed and selected. Then check the heat balance allowable power of the reducer.
: A belt conveyor reducer, motor driven, motor speed n=1460r/min, transmission ratio i=20. Transmission power >15kW. Daily labor cost 24h, maximum ambient temperature 35 (. Natural ventilation cooling , oil pool lubrication requires the selection of a standard reducer with equivalent specifications. Step 1: Select according to the mechanical strength and power table of the reducer. ...Generally, the labor condition coefficient KA must be calculated. In special cases, the safety factor ||tt| |The load of the belt conveyor is medium impact, check Figure A1, take K.2 1.5 to calculate the power: Pm-P·K.=1.5×15-22.5kW
Press i=20 and n1500r/min. Check the table 1: ZJY180, i=20, n=1500r/min, P:--24kW when n,=l460r/min. Converted nominal power: P,-1460/i500x24=23.4kW
Pzm=22.5kWP , -23.4kW. You can choose the ZJY180-20 reducer. Step 1: To check whether the thermal power P2 can pass, the factor F2F should be satisfied: P·f·f2·fPc
Look up the table. A2, Table A3 and Table A4:
J 1.15;f,—1;f--1.08(15/23.4-64%)P..=P:·f:·fz·fs=15kW× 1.15 x 1 Proposed by the Heavy Machinery Research Institute [1. This standard is sponsored by Maan IH Transmission Machinery Factory 176
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