Basic knowledge of excavators

1. Excavators are fixed assets with large economic investment. In order to increase their service life and obtain greater economic benefits, equipment must be fixed, fixed, fixed, and clearly defined. When the post must be transferred, equipment should be handed over.

2. After the excavator enters the construction site, the driver should first observe the geological conditions of the working face and the surrounding environment. There should be no obstacles in the radius of the excavator to avoid scratching or damage to the vehicle.

3. After the machine is started, it is forbidden to stand in the bucket, on the shovel arm and on the track to ensure safe production.

4. During the work of the excavator, it is forbidden for any person to stay or walk in the radius of gyration radius or under the bucket. Non-drivers are not allowed to enter the cab and move without training, so as not to cause damage to electrical equipment.

5. When the excavator is moving, the driver should first observe and whistle, then move the position to avoid a safety accident caused by someone at the mechanical position. The position after the position should be ensured that there is no obstacle in the space of the excavator's radius of rotation. .

6. After the work is finished, the excavator should be moved away from the low-lying area or the edge of the trough (ditch), parked on the ground, closed the doors and windows and locked.

7. The driver must do daily maintenance, overhaul and maintenance of the equipment, make daily records in the use of the equipment, find that the vehicle has problems, can not carry sick work, and report and repair in time.

8. The cab must be clean and tidy, keep the surface of the car clean, free from dust and oil, and develop the habit of cleaning the car after work.

9. The driver should make timely records of the day and class, do a good job of the work content of the day, complete the formalities of zero-work or zero-time work outside the project, and make a record for the checkout.

10. During the work period, drivers are strictly forbidden to drink at noon and drink and drive. If they find that they have given financial punishment, the economic losses will be borne by me.

11. For human-induced vehicle damage, it is necessary to analyze the cause, find the problem, distinguish the duties, and impose economic punishment according to the responsibility.

12. We must establish a high degree of responsibility, ensure safe production, earnestly communicate and serve with the builders, do a good job in bilateral relations, establish a good work style, and do our best for the development and efficiency of the company.

13. Excavator operation is a special operation, and special operation operation certificate is required to drive the excavator.

Meniscus Cylinder Lens

Meniscus cylinder Lens can increase the NA of the system while only adding slightly to the total spherical aberrations. The Negative Meniscus cylinder Lens is used to increase the focal length of another Cylindrical Lens while maintaining the angular resolution of the optical assembly. This lens shape is best used when one conjugate is relatively far from the cylindrical lens.

Some styles of cylindrical lenses have antireflective coatings to increase the transmission of light through the lens.
Fused silica cylinder lenses are ideal for demanding laser machining and medical applications.

negative meniscus lens1620973754(1)

Negative Meniscus cylinder lens


positive meniscus lens1620973754(1)


Positive Meniscus cylinder Lens


Specification of our meniscus cylinder lens or Plano-Convex Cylindrical Lens as follow:
*Material: BK7,Ge,UV-grade fuse silica(JGS1,JGS2,JGS3)or other optical materials
*Dimension Tolerance: +0.0 -- -0.1mm
*Center Thickness: +/-0.1mm
*Focal Length Tolerance: +/-1%
*Surface Quality:20/10
*Surface Figure: lambda/2 at 633nm on plano side
*Clear Aperture>90%
*Chamfer: 0.25mm at 45 degree typical
*Coating Optional

Meniscus Cylinder Lens,Optical Glass Meniscus Cylinder Lens,Meniscus Spheric Lens,Meniscus Cylindrical Lens

China Star Optics Technology Co.,Ltd. , https://www.realpoooptics.com