Door crane steel structure component introduction

The steel structure of the portal crane and the portal crane is composed of a cross door frame, a rotating column, a truss type herringbone frame and a rigid tie rod combination arm frame. Among them, the gantry, the herringbone frame, the rotating column and the boom are the main force members.

Gantry: The gantry structure supports the full weight and all external loads of the upper rotating part. Therefore, the gantry structure is important for the stability of the entire crane and for reducing its own weight. The quality of the gantry structure is about 20% to 30% of the mass of the entire crane. In order to ensure the normal and smooth operation of the crane, the gantry must have sufficient strength, especially for greater rigidity. The structure of the door frame can be divided into a rotating column door frame, a large bearing door frame and a fixed column door frame. According to the type of steel used in the gantry, it can be divided into truss type gantry, slab beam type gantry and box type gantry.

Herringbone frame: In the portal crane, in order to support the boom, a herringbone frame is generally provided. The push rod of the luffing mechanism, the tie rod of the combined boom and its counterweight lever are all connected to the herringbone frame. The herringbone frame is supported on a rotating platform. The structure of the herringbone frame is related to the basic parameters of the crane, the type of boom and the type of the luffing mechanism used.

Rotating platform and rotating column: The metal structure of the widely used platform currently consists of two longitudinal main beams and flat plates. Depending on the force, these beams can be made into box-section or I-shaped sections, and the boom and herringbone are supported on the platform. In addition, there is a lifting platform and a rotating column. The two lower bearing seats of the boom are welded to the end of the main beam of the platform.

The rotating column is often made into a pyramid-shaped thin-walled box structure with high rigidity and light weight. Since the cross-sectional dimension of the rotating column is large and the arm thickness is small, in order to ensure the local stability and the surrounding rigidity, the inner arm of the rotating column is often reinforced with the transverse ribs and the longitudinal ribs.

The steel structure of the portal crane and the portal crane is composed of a cross door frame, a rotating column, a truss type herringbone frame and a rigid tie rod combination arm frame. Among them, the gantry, the herringbone frame, the rotating column and the boom are the main force members.

Gantry: The gantry structure supports the full weight and all external loads of the upper rotating part. Therefore, the gantry structure is important for the stability of the entire crane and for reducing its own weight. The quality of the gantry structure is about 20% to 30% of the mass of the entire crane. In order to ensure the normal and smooth operation of the crane, the gantry must have sufficient strength, especially for greater rigidity. The structure of the door frame can be divided into a rotating column door frame, a large bearing door frame and a fixed column door frame. According to the type of steel used in the gantry, it can be divided into truss type gantry, slab beam type gantry and box type gantry.

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The steel structure of the portal crane and the portal crane is composed of a cross door frame, a rotating column, a truss type herringbone frame and a rigid tie rod combination arm frame. Among them, the gantry, the herringbone frame, the rotating column and the boom are the main force members.

Gantry: The gantry structure supports the full weight and all external loads of the upper rotating part. Therefore, the gantry structure is important for the stability of the entire crane and for reducing its own weight. The quality of the gantry structure is about 20% to 30% of the mass of the entire crane. In order to ensure the normal and smooth operation of the crane, the gantry must have sufficient strength, especially for greater rigidity. The structure of the door frame can be divided into a rotating column door frame, a large bearing door frame and a fixed column door frame. According to the type of steel used in the gantry, it can be divided into truss type gantry, slab beam type gantry and box type gantry.

Herringbone frame: In the portal crane, in order to support the boom, a herringbone frame is generally provided. The push rod of the luffing mechanism, the tie rod of the combined boom and its counterweight lever are all connected to the herringbone frame. The herringbone frame is supported on a rotating platform. The structure of the herringbone frame is related to the basic parameters of the crane, the type of boom and the type of the luffing mechanism used.

Rotating platform and rotating column: The metal structure of the widely used platform currently consists of two longitudinal main beams and flat plates. Depending on the force, these beams can be made into box-section or I-shaped sections, and the boom and herringbone are supported on the platform. In addition, there is a lifting platform and a rotating column. The two lower bearing seats of the boom are welded to the end of the main beam of the platform.

The rotating column is often made into a pyramid-shaped thin-walled box structure with high rigidity and light weight. Since the cross-sectional dimension of the rotating column is large and the arm thickness is small, in order to ensure the local stability and the surrounding rigidity, the inner arm of the rotating column is often reinforced with the transverse ribs and the longitudinal ribs.

Frame: In the portal crane, in order to support the boom, a herringbone frame is generally provided. The push rod of the luffing mechanism, the tie rod of the combined boom and its counterweight lever are all connected to the herringbone frame. The herringbone frame is supported on a rotating platform. The structure of the herringbone frame is related to the basic parameters of the crane, the type of boom and the type of the luffing mechanism used.

Rotating platform and rotating column: The metal structure of the widely used platform currently consists of two longitudinal main beams and flat plates. Depending on the force, these beams can be made into box-section or I-shaped sections, and the boom and herringbone are supported on the platform. In addition, there is a lifting platform and a rotating column. The two lower bearing seats of the boom are welded to the end of the main beam of the platform.

The rotating column is often made into a pyramid-shaped thin-walled box structure with high rigidity and light weight. Since the cross-sectional dimension of the rotating column is large and the arm thickness is small, in order to ensure the local stability and the surrounding rigidity, the inner arm of the rotating column is often reinforced with the transverse ribs and the longitudinal ribs.

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