Crane rail is one of the indispensable parts of every lifting equipment. This part plays an important role in the movement of the crane. In fact, there are several causes of crane rail wear, affecting the safety of the entire equipment system and the quality of work. So what are the causes and ways to overcome the rail corrosion of the crane? Let us refer to offline.
Crane rail has two types of rails: Horizontal rail and longitudinal track.
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Causes and remedies for crane rail corrosion
There are 2 common cases due to improper installation that lead to the corrosion of crane rails: The wheel assembly of the side girder is installed incorrectly or the two rails are installed at an uneven height at a deviation. Therefore, in the process of moving, it creates inhomogeneity with the crane rail, causing the crane rail to be corroded and uneven.
The crane used for a period of time is not properly maintained, leading to deformation, causing the side girder to bend, causing horizontal and vertical deviation of the wheel, causing the rails to corrode and corrode. even.
Brakes installed at 2 side beams work unevenly. When braking, one side uses faster, the other stops slower, causing the hoist to tilt, leading to rapid corrosion of the rail on one side.
In order to limit and overcome corrosion in crane rails, the following basic requirements for rails and installation techniques must be met.
When arranging, create a link between the column shoulder and the running track must be firm, not loose.
- Crane rails are not cracked and deformed. In particular, the surface of the crane rail must be very clean, avoiding obstacles on the track.
- The rail when designed must be suitable for the maximum pressure of the equipment during the lifting and lowering of the load.
- Rays must be straight, flat within the allowed tolerance. Crane rails need to be installed firmly to avoid vertical displacement or uneven settlement during use.
2.1. When installing, it is necessary to pay attention to the deviation of the traveling rail under the close hanging points of the hoist and hoist. This number should not exceed 1/1500L when assembled and 1/1000L when used.
2.2. For construction tower crane rails, the width error must be ensured compared with the standard size value. This number should not be more than ±3mm when the gauge is 3000m wide, the error is not more than ±4mm when the gauge is 3500mm wide and ±5mm when the gauge is 5000m wide.
2.3. On a 10m road, the curvature should not be greater than 20mm. For vertical and horizontal inclination of hanging type is 0.003 and running type is 0.005. The rail joint must be placed on the support and have a clearance of 3mm connected by a screw with a black washer and a bolt. The height and sides of rails with displacement parameters should not exceed ± 2mm. The distance between the streaks should not be displaced by more than ±5mm from the reference distance.
2.4. Rail surface wear should not exceed 5% of the original size.
2.5. The wear of the rail surface should not exceed 10% of the original size.
2.6. There must be guard posts at the ends and ends of the rails to prevent the crane from slipping off the rails. The presser post must be sturdy and elastic in rubber or wood in contact with the shaft. Between the rails must be connected by welding conductors and non-rails, and at the same time connecting the rails to the electrical system.
Crane rail is one of the particularly important parts for crane equipment. Therefore, always ensure the technical requirements in production and installation. Quang Trung Industrial Group Joint Stock Company specializes in designing - installing cranes and consulting services nationwide.
Please contact us for more details:
Quang Trung INDUSTRIAL GROUP JOINT STOCK COMPANY
Representative office address at: Lot 33 Villa 4 Linh Dam Peninsula Hoang Mai, Hanoi
Phone: 0379645086
Email: tapdoanquangtrunggroup@gmail.com
