Analysis of contact area of ​​worm tooth in steam turbine


Improper installation and adjustment of the worm wheel in the steam turbine reducer will cause malfunction in all aspects. If the main oil pump is damaged and cannot be supplied with oil, the governor will be shaken, the tachometer indication will be inaccurate, etc., and eventually the unit will be unable to operate. The malfunction of the worm wheel set is manifested in improper connection of the teeth or poor contact. The incorrect connection of the teeth is mostly due to the large difference between the actual center distance of the worm wheel set and the design number. However, the actual center size gap is too large or the center line is not perpendicular to the manufacturer, and there are also improper installation and adjustment of the site.
When the steam turbine is running, the center line of the worm should be located in the central plane of the worm gear teeth. When the turbine is stopped, the coloring check worm wheel can be correctly placed at this position.
In the coloring inspection, the working face of the worm gear should have more than 57 contact areas and be uniform. If the contact area is insufficient or the one side is colored, it means that the position of the worm wheel is to be adjusted. A good check of the coloring check worm wheel set does not fully explain the suit of the worm wheel. Because when the turbine is running, some movement of its shaft will occur, and the positional relationship between the worm and the worm wheel will change.
In order to mount the worm gear on the horizontal axis as much as possible in the correct position during operation, the following important conditions must be met: when the turbine rotor rotates clockwise (as viewed in the direction of the steam flow), the working surface of the worm wheel teeth There are colors from 1/2 to 3/4 on the right side. To do this, the worm wheel must be moved slightly to the left (change the thickness of the adjustable gasket).

Car Parking Lift:

Specialized automobile 4s shops lifting platform is a kind of large tonnage car or truck repair and maintenance units commonly used special mechanical Lifting Equipment

The lifting platform can be divided into upper cylinder lift and lower cylinder lift.

The oil cylinder of the upper oil cylinder Car Repair Lift is placed on the top of the column(with beam), and the oil cylinder of the lower oil cylinder Four Posts Car Lift Platform is placed on the side of the guide rail.

Private car lifts are also often used as great vehicles for moving cars between floors.

Main Features of Car Parking Lift:

1. Hydraulic driven,cable lifting system

2. Four points automatic safety locks,manual release

3. Maintenance free load bearing,assure the safety in any height

4. Unchangeable width between runways

6. 5T lifting capacity, double parking space

7. Safety locks in all posts for added safety

8. Single point lock release

9. Simple installation

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Application Area: 

The Car Parking Lift is a new type of automobile lifting equipment, which is convenient, fast, safe and reliable for maintenance. It is widely used in car 4S shops, car repair shops, car showrooms and other places that need a safe and beautiful environment for lifting cars.

If you have any questions, please contact with us directly. Car Parking Lift are produced with High Quality and Good Appearance. Welcome you can visit our Factory. For inqury, Please send mail directly to us.


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