Bridge Girder Erection Crane Installation

Ellsen double girder overhead crane design

The bridge erector is a kind of crane that is specially used for the construction of highways and railways to lift the produced beam to the designated position. According to different construction environments, it can be divided into high-speed railway cranes and other bridges. In order to ensure the safe operation of bridge erection to ensure construction quality, the bridge erector needs to be installed in accordance with the standard installation scheme.

10 ways to easily install the bridge crane

Below to understand the main steps of the installation program of the bridge machine:

The maximum width of the beam is combined to adjust the center distance of the main beam of the bridge erecting machine.

First of all, the center distance of the main beam will be adjusted to the maximum width to improve the stability of the bridge machine. To adjust the lengths of the components such as the front frame carrier frame, if there is a gradient in the bridge, the lengths of the front and rear risers need to be adjusted to ensure the stability of the bridge frame machine.

Second, in the middle of the bridge, the middle beam supports the installation of components such as the wheel box and the track. The curve bridge needs to be adjusted according to the tilt angle of the middle traverse track. In addition, the middle trajectory needs to be adjusted to eliminate the influence of the cross slope.

Third, when installing the bridge crane to rent the main beam, the bracket should be arranged to facilitate the installation.

Fourth, when installing the main girder, it is necessary to install the number to install it. Each time the main girder is installed, the main girder is propelled by the rear drive device for the installation of the next main girder.

Fifth, install the front traverse rail on the platform. After the traverse of the track before leveling, the front frame of the main beam can be installed. Installation of front leg hydraulic lifting support device.

Seventh, installation cranes and transport beams.

Eighth added lubricants for debugging and well prepared.

Two steps in performance testing

1 no-load detection

The bridge crane carries out the no-load operation, detects whether there is an obstacle in the control system of the bridge erection machine, whether the hoisting wire rope is worn, and the number of rope clamps is not enough.

2 trial crane

After the erection machine is installed, it is necessary to perform a trial crane to perform the work. In the process of the trial crane, the performance of the bridge crane is measured, the technical status of the equipment is analyzed scientifically, and whether the comprehensive assessment and erection bridge crane has the requirements for safe operation, and the existing problems need to propose improvement measures. When testing, lift the box-type cement beam larger than the maximum lifting capacity by 10% to determine its safety performance.After the erection machine is installed, it is necessary to perform a trial crane to perform the work. In the process of the trial crane, the performance of the bridge crane is measured, the technical status of the equipment is analyzed scientifically, and whether the comprehensive assessment and erection bridge crane has the requirements for safe operation, and the existing problems need to propose improvement measures. When testing, lift the box-type cement beam larger than the maximum lifting capacity by 10% to determine its safety performance.

Overhead Crane Installation

Overhead Crane Installation Steps are As Follow:

  • The structure of bridge crane and the installation of the car
  • The bridge is the main body of the bridge type crane, its erection and assembly have strict technical requirements, and there is a set of strict measurement methods.
  • To measure the installation results.
  • Before the installation will be bundled with the hook off for welding into the girder web, transportation.
  • Installation methods and requirements.
Electromagnetic 10t double girder crane for sale
Electromagnetic 10t double girder crane for sale

The crane, which is required to be erected as a whole, should be supported on a rack that is temporarily lifted by the span of the crane to leave the main beam out of the ground.If the rail can be laid on the shelf, the cartwheel can be placed directly on the rail.Otherwise, the lower level cover of the main beam should be placed near the two ends of the main beam.No matter which method is used, you need to use the level meter to find the right.For rail laying, the horizontal plane is used as a benchmark to find the level. The level of the bridge is measured at the distance between the centerline of the end beam and the center line of the car track when the cushion is under the main girder.Before measuring the horizontal position, the end beam should be connected by the method specified by the pattern (or with the hinged hole bolt or the reaming axis).A cone tread wheel should make contact with the side wall of the steel rail flange, to prevent movement and affect the level of accuracy.The quality of a bridge that requires the supporting point of a bridge to be located under the wheel.

80t bridge crane for sale

Installation and inspection on the ground are much more convenient than erecting in the air, and it is easy to repair more than the specified error or damaged part.However, due to the limitation of erection and hoisting equipment, sometimes they have to be disassembled, then they are installed on the rail carrying beams of the workshop, then assembled, especially large tonnage cranes.

The Installation of an Overhead Crane Car

Ellsen top running crane for sale
Ellsen top running crane for sale

The assembly of the car is generally installed in the manufacturing plant, and it can be placed on the bridge when it is shipped to the use unit.The car that is transported separately for a variety of reasons should be reassembled and fastened according to the technical requirements of the drawings.The reassembled car should check the size of the small wheels to meet the technical requirements.The inspection methods and specific provisions are the same as the measurement methods mentioned above in the structural installation of the overhead crane and the installation part of the car operation mechanism in the third section of the installation of large and small cars. If you need our crane services, welcome contact us.