Overhead crane rail and gantry crane rail for sale. Dongqi offers crane rail services from crane rail design to crane rail installation, with various crane rail dimensions and specifications to meet all your need. Dongqi Crane is your trustworthy crane rail supplier from China.
Crane rails of various rail dimesions and specifications- Dongqi crane rail supplier
Crane rail
Crane rail includes crane steel rail, track steel rail, square rail. At the top of the rail is convex, the bottom is the tablet which has a certain width, increase the contact area with the base; Cross section of the orbit for i-section, has a good bending strength.
Types of crane rails
Crane rail, Track rail, Square steel rail
Crane rail supporting methods
- steel structure beam
- concrete preformed beam
Crane rail dimesions and crane rail specifications
Crane rail design and crane rail dimensions - Dongqi overhead crane rail and gantry crane supplier
Crane rail design and crane rail dimensions -
Crane rail design and crane rail dimensions
The crane rail joint connection
- 1. Crane rail joint seam, general is 1 ~ 2 mm, installed in cold areas or when the temperature is lower than the perennial use temperature and differ in more than 20 ℃, temperature compensation gap should be considered, it is advisable to take 4 ~ 6 mm.
- 2. Crane rail can be joint with straight head, also can be made into 45 ° Angle bevel joint, inclined joint can make the wheel in a smooth transition joint.
- 3. Two rail lateral joint dislocation and height difference shall be less than 1 mm.
- 4. Preparation before welding. Before the crane rail welding joint, carefully clean up the groove and the nearby oil contamination, rust, etc, until metallic luster.
- 5. Welded rail connection sequence is from bottom up, after the first rail waist rail, rail head, one by one step by step a way for surfacing, around the last repair.
- 6. The matters needing attention in the process of crane rail welding.
In each layer of welding when the wave, especially in the welds crane rail bottom of each layer of welding wave, should use one finish electrode welding, avoid or move between electrode and arc breaking, 2 layer before and after welding the welds should be the opposite direction of the wave; Each crane rail joint welding work shall be carried out continuously, in order to keep the end of the rail welding at high temperatures (300 ℃ ~ 350 ℃). After welding, when the eliminating stress before has not been cooling after heat treatment, must prevent the rain wet; Heat the copper plate can be removed with water cooling, in order to use the next time.
- 7. Rail connection smooth processing
Crane rail welding joint is eliminating stress after heat treatment and cooling to the atmospheric temperature, the track on the surface of the top and sides of weld smooth processing. When welding bulge is too large, with a grinding wheel polishing machine polishing processing, until flush with rail head, finally will surface grinding.
Overhead crane rail installation for overhead crane
For overhead crane, the overhead crane rail are paved on supporting beam, which include steel beam and concrete beam.
According to overhead crane drawing, settle down the position, altitude. Before install overhead crane rail, firstly inspect groove, section, straight line, and warp of the crane rail, after qualified, pave the overhead crane rail. And find out rail datum line.
Crane rail on supporting beam
If the overhead crane rail is paved on supporting beam, the overhead crane rail center distance and supporting beam center distance, their deviation should be within 10mm. and not bigger than beam half thickness.
Overhead crane rail installed on supporting beam
Overhead crane rail is fixed on supporting beam, rail bottom should be sole laying on beam top. If there is space and long is more than 200mm, there should be padded, pad length is more than 100mm, width is 10—20mm wider than rail bottom. Each set of pad must not more than 3 layers. Pads are welded to supporting beam.
The deviation between cane rail center distance and installing datum line, should be not more than 5mm for general gantry crane.
If the crane span length is not more than 10m, rail center distance allow a deviation of ±3.0 mm.if crane span is more than 10m, rail center distance allow a deviation of ±15 mm. Following is formula:
△S=±[3+0.25(S－10)] : △S: crane span deviation（mm） S—rail center distance deviation（m）
The overhead crane rail connecting joint should be stagger, the staggered distance is not same as wheel gauge. And on joint, the supporting point should be at span’s 1/3～1/4. Crane rail i-beam flange weld bevel butt weld, web has same strength through welding butt weld, after welding, the welding surface is leveling. Artifacts correction for the inclination of the I beam flange delta < / 80 b, b is I beam flange width. Torsion of Angle steel, i-beam vector △h≤L/1000 or less, but shall not be bigger than 5 mm. Local buckling of steel plate rise within a certain range f≤1.5mm.
Some steel plate is out of shape, you can correct it by hammer. For some structural steel, there is special Jack to do gagging. If it is difficult, heat straightening is possible, but the heat temperature should be not more than 900°C.
Then make holes for bolts on end of crane rail used to connecting by clamps. You should make holes by mechanical not instead of gas cutting. Bolts can’t have crack, rag or nick.
At last, pave the crane rail and fix it on supporting beam with welding or bolts platens. The welding is inspected by ultrasonic, require I grade.
Welded platens and clamps Bolted platens
Crane rail on concrete beam
If overhead crane rail is paved on concrete beam, firstly, there should be embedded steel plate on top of concrete beam. Crane rail is fixed on the embedded steel plate, which is similar as gantry crane rail foundation. Other work is same as above.
Embedded steel plate on top of concrete beam
Gantry crane rail installation
If the gantry cranes work in factory, storage or yard, usually the crane rail is sunken in a groove. For some big working space such as port / dock, crane rail is salient on ground. No matter what condition it is, there should be foundation under the gantry crane rail to make sure the ground can bearing the gantry cane and wheel Max. loading pressure.
Gantry crane rail
Foundation for gantry crane rail
The solid foundation for gantry crane is safety base of gantry crane operation. In the following, the 5Ton gantry crane rail foundation drawing is presented for your reference:
Gantry crane rail foundation drawing- 5 ton gantry crane
Gantry crane rail foundation for 5Ton gantry crane
Crane raill installation case pictures
Gantry crane rail and rail gantry crane
Get your custom overhead crane rail and gantry crane rail
Overhead crane rail and gantry crane rail for sale. Dongqi offers crane rail services from crane rail design to crane rail installation, with various crane rail dimensions and specifications to meet all your need. Dongqi Crane company is your trustworthy crane rail supplier from China. If you need any rail, please feel free to contact us to get your custom overhead crane rail and gantry crane rail. More information abou Dongqi crane parts, please visit Dongqi crane and hoist parts center.
Overhead crane rail & gantry crane rail: Various crane rail dimensions and specifications
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