This standard specifies the models and basic parameters, technical requirements, test methods, inspection rules and markings, general requirements for packaging and storage and transportation of continuously variable speed cycloid reducers. This standard applies to continuously variable speed cycloid reducers composed of multi-disc continuously variable transmissions and single-stage cycloid reducers in series. JB/T 7254-1994 Continuously Variable Speed ​​Cycloid Reducers JB/T7254-1994 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Continuously Variable Speed ​​Cycloidal Pinwheel Reducer
Subject Content and Scope of Application
JB/T7254-94
This standard specifies the model and basic parameters, technical requirements, test methods, inspection rules and general requirements for marking, packaging and storage and transportation of continuously variable speed cycloidal pinwheel reducers.
This standard applies to continuously variable speed cycloidal pinwheel reducers (hereinafter referred to as variable reducers) composed of multi-disc continuously variable transmissions (hereinafter referred to as transmissions) and single-stage cycloidal pinwheel reducers (hereinafter referred to as reducers) connected in series. 2 Reference standards
GB2828
Batch inspection counting sampling procedure and sampling table (applicable to inspection of continuous batches)GB6388
Transport packaging delivery and receipt marks
Precision of involute cylindrical gears
GB10095
GB/T13306 Labels
GB/T13385
Requirements for packaging drawings
JB/T2982
JB/T7346
3 Classification
Cycloidal pinwheel reducer
Test method for mechanical continuously variable transmission
3.1 Ordinary type: A variable speed reducer model composed of a first-stage transmission and a single-stage reducer. Its mechanical characteristics are divided into constant power type and constant torque type.
3.2 Large speed range type: A variable speed reducer model composed of a two-stage transmission and a single-stage reducer in series, whose mechanical characteristics are between constant power and constant torque characteristics.
4 Models and basic parameters
4.1 Models
The type consists of product code, machine model, speed range, mechanical characteristics, installation type, input power, reducer model and transmission ratio.
4.1.1 Product code
The product code of the speed reducer is indicated by "\PZ". 4.1.2 Machine model
a. Ordinary type is indicated by Arabic numerals 1, 2, 3, 4, 5, 6, 7, 8; b. Type with a large speed range is indicated by Arabic numerals 1, 2, 3. 4.1.3 Number of speed stages
Ordinary type is not indicated:
Type with a large speed range is indicated by "\S\".
4.1.4 Mechanical characteristics
Approved by the Ministry of Machinery Industry of the People's Republic of China on July 18, 1994 496
Implementation on July 1, 1995
JB/T725494
a. Ordinary type with constant power is indicated by "G\; constant torque type is not indicated; b. Type with a large speed range is not indicated.
4.1.5 Installation type
W is a double-shaft type, horizontal installation;
WD is a motor direct-connected type, horizontal installation;
LD is a motor direct-connected type, vertical installation. 4.1.6 Marking method
Standard code
Transmission ratio
Reducer model
Input power (constant torque type is input power at high speed), kW Installation type
Mechanical characteristics
Number of speed stages
Model
Product code
Marking example
Model 4 double-shaft horizontal installation ordinary variable reducer. Input power It is 4kW, with constant power output. It is connected to the reducer with a transmission ratio of 29 of type A in No. 6. It is marked as: PZ4GW4-6A-29JB/T7254
b. Model 2 motor direct-connected type, horizontally installed large speed range type variable speed reducer. The input power is 2.2kW, and it is connected to the reducer with a transmission ratio of 17 of type B in No. 5. It is marked as: PZ2SWD2.2-5B-17JB/T 7254
4.2 Basic parameters
The basic parameters of ordinary constant power type, constant torque type and large speed range type variable speed reducer are shown in Table 1, Table 2 and Table 3 respectively. Table 1 Basic parameters of constant power variable speed reducer Machine model
Input power
Input speed
Speed ​​ratio
0.20~0.80
0.23~0.76
Reducer
Machine model
Permissible torque of output shaft
Transmission ratio
Technical Committee for Standardization of Petroleum Industry CPSCOutput shaft speed
27.2~109.0
17.6~70.5
13.0~52.1
10.3~41.3
31.3~103.6||tt ||20.3~67.0
15.0~49.0
Machine model
Input power
Input speed
Speed ​​ratio
0.23~0.76
0.20~0.80
JB/T7254—94
Continued table 1
Reducer
Machine model
Beiyun C
Permissible torque of output shaft
Transmission ratioWww.bzxZ.net
Output shaft torque
31.3~103.6
20.3~67.0
15.0~49. 0
11.9~39.3
15. 049. 0
11.9~39.3
27.2~109.0
17.6~70.5
13.0~52.1
10.3~41.3
7. 0~27. 9
3. 4~13. 7
4.2~16. 9
27.2~109. 0
17. 6~76. 5
13.0~52.1
10.3~41.3
Machine model
Input power
Input speed
Speed ​​ratio
0.20~0.80
0.20~0.80
0.20~0.B0
JB/T725494
Continued Table 1
Reducer
Machine model
Permissible torque of output shaft
Transmission ratio
Output shaft speed
10.3~41.3
27.2~109.0
17.6~70.5
13.0~52.1
10.3~41.3
10. 3~41.3
27.2~109.0
17.6~70.5
13.0~52.1
10.3~41.3
10.3~41.3
27.2~109.0
17.6~70.5
13 .0~52.1
10.3 ~41.3
Machine model
Input power
Input speed
Speed ​​ratio
0.28~1.12
0.27~1.08
JB/T7254—94
Continued table 1
Reducer
Machine model
Permissible torque of auxiliary output shaft
11 700
11 700
21 500
21 500
Transmission ratio
Output shaft speed
16.4~65.8
12.1~48. 6
4 .7~18. 9
24.5~98.1
15.9~63.5
11.7~46. 9
24.5~98.1
15.9~63.5
11.7~46.9
Machine model
Input power
Input speed
Speed ​​ratio
0.31~1.24
JB/T725494
Continued Table 1
Reducer
Machine model
Permissible torque of output shaft
Transmission ratio
Output shaft speed
13.6~54.7
10.1~40.3
5.4~21.6
Note: 1》means that when this transmission ratio is used, the input power is greater than the design power of the variable speed reducer. The variable speed reducer should be used within the allowable torque range of the output shaft or be equipped with an overload protection device.
Table 2 Basic parameters of constant torque variable speed reducer Input power
Machine model
Input speed
Speed ​​ratio
0.23~0.76
Reducer
Machine model
Permissible torque of output shaft
Transmission ratio
Output shaft speed
27.2~109.0
17.6~70.5
13.0~52.1
10.3~41.3
27.2~109.0
17.6~70.5
13.0~52.1
10.3~41.3
7. 0~27.9
31.3~103.6
20.3~67.0
15.0~49.5
Machine model
Input power
Input speed
JB/T7254—94
Continued table 2
Reducer
Speed ​​ratio
0.23~0.76
0.20~0.80
Machine model
Permissible torque of output shaft
Transmission ratio
Output shaft speed
31.3~103.6
20.3~67.0||t t||15.0~49.5
11.9~39.3
15.0~49.5
11.9~39.3
27.2~109.0
17.6~70.5
13.0~52.1
10.3~41.3
27.2~109.0
17.6~70.5
13.0~52.1
10.3~41.3
Machine model
Input power
Input speed
Small in
JB/T7254 94
Continued Table 2
Reducer
Speed ​​ratio
0.20~0.80
0.20~0.80
0.28~1.12
Machine model
Permissible torque of output shaft
Transmission ratio
Output shaft speed
27.2~109.0
17.6~70.5
13.0~52.1
10.3~41.3
27.2~109.0
17.6~70.5
13.0~52.1
10 .3~41.3
13.0~52.1
10.3~41.3
25.4~101.8
16.4~65.8
12.1~48.6
Machine model
Input power
Input speed
JB/T7254—94
Continued table 2
Reducer
Speed ​​ratio
0.28~1.12
6.27~1.08
0.31~1.24
Machine model
Permissible torque of output shaft
11 700
Transmission ratio
Output shaft speed
24.5~98.1
15.9~63.5
11.7~46.9
4.6~18.3
13.6~54.7
10.1~40.3
Machine model
Input power
Input speed
JB/T7254—94
Continued table 2
Reducer
Speed ​​ratio
Machine model
0.31~1.24
Permissible torque of output shaft
29 400
Transmission ratio
Output shaft speed
3.3~13. 0
13.6~54.7
10.1~40.3
13.6~54.7
10.1~40.3
Note: 1) It means that when this transmission ratio is adopted, the input power is greater than the design power of the speed reducer. The speed reducer should be used within the allowable torque range of the output shaft or be equipped with an overload protection device.
Table 3 Basic parameters of variable speed reducer with large speed range Input power
Machine model
Input speed
Speed ​​ratio
0.07~0.70
Reducer
Machine model
Permissible torque of output shaft
Transmission ratio
Output shaft speed
4.6~45. 6
Machine model
Input power
Input speed
JB/T7254-94
Continued Table 3
Reducer
Speed ​​ratio
0.06~0.72
Machine model
Permissible torque of output shaft
Transmission ratio
Output shaft speed31~1.24
Machine model
Permissible torque of output shaft
11 700
Transmission ratio
Output shaft speed
24.5~98.1
15.9~63.5
11.7~46.9
4. 6~18. 3
13.6~54.7
10.1~40.3
Machine model
Input power
Input speed
JB/T7254—94
Continued table 2
Reducer
Speed ​​ratio
Machine model
0.31~1.24
Permissible torque of output shaft
29 400
Transmission ratio
Output shaft speed
3.3~13. 0
13.6~54.7
10.1~40.3
13.6~54.7
10.1~40.3
Note: 1) It means that when this transmission ratio is adopted, the input power is greater than the design power of the speed reducer. The speed reducer should be used within the allowable torque range of the output shaft or be equipped with an overload protection device.
Table 3 Basic parameters of variable speed reducer with large speed range Input power
Machine model
Input speed
Speed ​​ratio
0.07~0.70
Reducer
Machine model
Permissible torque of output shaft
Transmission ratio
Output shaft speed
4.6~45. 6
Machine model
Input power
Input speed
JB/T7254-94
Continued Table 3
Reducer
Speed ​​ratio
0.06~0.72
Machine model
Permissible torque of output shaft
Transmission ratio
Output shaft speed31~1.24
Machine model
Permissible torque of output shaft
11 700
Transmission ratio
Output shaft speed
24.5~98.1
15.9~63.5
11.7~46.9
4. 6~18. 3
13.6~54.7
10.1~40.3
Machine model
Input power
Input speed
JB/T7254—94
Continued table 2
Reducer
Speed ​​ratio
Machine model
0.31~1.24
Permissible torque of output shaft
29 400
Transmission ratio
Output shaft speed
3.3~13. 0
13.6~54.7
10.1~40.3
13.6~54.7
10.1~40.3
Note: 1) It means that when this transmission ratio is adopted, the input power is greater than the design power of the speed reducer. The speed reducer should be used within the allowable torque range of the output shaft or be equipped with an overload protection device.
Table 3 Basic parameters of variable speed reducer with large speed range Input power
Machine model
Input speed
Speed ​​ratio
0.07~0.70
Reducer
Machine model
Permissible torque of output shaft
Transmission ratio
Output shaft speed
4.6~45. 6
Machine model
Input power
Input speed
JB/T7254-94
Continued Table 3
Reducer
Speed ​​ratio
0.06~0.72
Machine model
Permissible torque of output shaft
Transmission ratio
Output shaft speed
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