CB 742-68 Sunroof Transmission Components CB742-68 Standard Download Decompression Password: www.bzxz.net

The Sixth Ministry of Machinery Industry of the People's Republic of China
Skylight transmission device components
Skylight transmission device component types are shown in Table 1.
Speed ​​change mechanism
Lower transmission mechanism
Lifting mechanism
Upper transmission mechanism
Sprocket change mechanism
The type and basic dimensions of the TA type speed change mechanism are shown in Figure 4. 2.
1-Worm wheel;
2-Axle bushing;
3-Axle,
4-Axle rod;
CB742-68
Axle end Φ50 matching pipe
5-Bracket;
Note: The module of the worm wheel is 7, the number of teeth is 32, and the pitch diameter is 224.09; the pitch diameter of the Axle rod is 85, and the single line is right. The Sixth Ministry of Machinery Industry issued
6-Gasket box.
Implemented on October 1, 1968
Total 3 pages Page 2
CB742-68
The type and basic dimensions of the TB type lower transmission mechanism are as shown in Figure 5. 3.
1-hand wheel;
Note: bevel gear module 6, number of teeth 18, pitch diameter 108. 5
2-bracket,
4. The type and basic dimensions of the TC type lifting mechanism are as shown in Figure 6. 180
1-strut,
2-gear;
3-bevel gear.
3-bracket;
4-guide wheel.
CB742-68
The type and basic dimensions of the TD type upper transmission mechanism are as shown in Figure 7. 5.
6Hole 13
1-handwheel,
2-bevel gear,
Note: bevel gear module 6, number of teeth 18, pitch diameter 108. 6
3-cover;
4-bushing;
The type and basic dimensions of the TE type sprocket transmission mechanism are as shown in Figure 8. n
1-bracket,
2-worm wheel;
5-connecting seat plate.
Shaft spring 50 with pipe
4-worm.
3 Sprocket
Note: Worm module 7, number of teeth 32, pitch diameter 224.09, worm pitch diameter 85, single-line right-handed. Marking example
TC type lifting mechanism:
Lifting mechanism TCCB742-68wwW.bzxz.Net
Page 3
Total 3 pages
7. The material of the worm wheel is generally HT20-40 cast iron, the material of the worm is generally carbon steel A4, the material of the bevel gear is generally 40 forged steel, and the material of the sprocket is generally HT20-40 cast iron. 8. The meshing part and the rotating part of the parts must be coated with lubricating oil after manufacturing. 9. The rotating parts should be flexible after assembly. 10. The selection and connection dimensions of the parts shall be in accordance with CB741-68.
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