CN211283529U - Automatic elevator for mounting multi-section combined gantry crane supporting legs - Google Patents

Abstract

The utility model belongs to an automatic lifting machine of installation multisection combination formula portal crane landing leg. The problems to be solved are that: the installation process requires a large floor area of a construction site, a large number of hoisting equipment and a long stroke, and is limited by space; at present, no special automatic lifting equipment exists. The key points of the adopted scheme are as follows: the shaft ejection clamp of the electric push rod jacks up the lifting frame step by step in a clamping groove of the lifting column, the electric push rod releases a pull ring to move out of the clamping groove of the lifting column through a shaft connected with the electric push rod through a pull rope, the position of the lifting frame is locked through a safety limit block when the shaft of the electric push rod is completely ejected out, a recovery winch is connected with the lifting frame through a steel wire rope and a steel wire rope guide wheel, the pull ring of the safety limit block is connected with the safety limit block through the pull rope to realize unlocking, and the side face of the lifting frame is provided with a gantry crane support leg connecting piece used for hoisting various gantry crane support legs on a gantry crane beam. The method is suitable for mounting the multi-section combined type gantry crane supporting legs.

Description

Automatic elevator for mounting multi-section combined gantry crane supporting legs

Technical Field

The utility model belongs to small-size portal crane landing leg erection equipment, especially an automatic lift of installation multisection combination formula portal crane landing leg.

Background

When an existing small-sized gantry crane is installed, a truck crane or other hoisting equipment is needed to lift a main beam of the gantry crane, and then the whole supporting leg is hoisted by other hoisting equipment to be installed. Therefore, the installation process needs a large construction site, a large number of hoisting equipment, a long hoisting stroke and easy space limitation in installation; at present, no special automatic lifting equipment is used for mounting a multi-section combined type gantry crane supporting leg.

Disclosure of Invention

The utility model aims at providing an automatic lifting machine of installation multisection combination formula gantry crane landing leg to solve the background art and exist: the installation process needs a large floor area of a construction site, a plurality of hoisting devices, a long hoisting stroke and easy space limitation in installation; at present, no special automatic lifting equipment is used for mounting a multi-section combined type gantry crane supporting leg. The scheme for solving the problem is as follows: the utility model provides an automatic elevator of installation multisection combination formula portal crane landing leg which characterized in that: the shaft ejection device is arranged on an electric push rod of a lifting frame and clamped in a clamping groove of a lifting column, the lifting frame is jacked up in a stepping mode, the lifting frame moves along the lifting column through the limitation of a guide wheel, the electric push rod releases a pull ring to move out of the clamping groove of the lifting column through a shaft connected with the electric push rod through a pull rope, the position of the lifting frame is locked through a safety limiting block to avoid falling when the shaft of the electric push rod is completely ejected out, a recovery winch is connected with the lifting frame through a steel wire rope and a steel wire rope guide wheel, the safety limiting block pull ring is connected with the safety limiting block through the pull rope to achieve unlocking, and gantry crane supporting leg connecting pieces are arranged on the side faces of. The flange plate of the portal crane support leg connecting piece is provided with a plurality of bolt holes connected with each section of portal crane support leg on the portal crane beam.

The utility model discloses with the more beneficial effect who has of background art be: by adopting the technical scheme, the 4 groups of automatic lifters for installing the multisection combined gantry crane supporting legs are adopted when in use to synchronously jack up the main beam of the gantry crane, connecting and fixing the first section of gantry crane supporting leg and the gantry crane main beam under the state, then lowering the lifting machine head, moving the connecting position, fixing the first section of gantry crane supporting leg and the flange plate of the gantry crane supporting leg connecting piece, jacking the gantry crane main beam and the installed first section of gantry crane supporting leg again synchronously, and connecting and fixing the second-section gantry crane supporting leg and the first-section gantry crane supporting leg under the state, then lowering the lifting machine head, moving the connecting position, fixing the second-section gantry crane supporting leg and a flange plate of a gantry crane supporting leg connecting piece, jacking the gantry crane main beam and the installed first-section gantry crane supporting leg and second-section gantry crane supporting leg synchronously again, and connecting and fixing the third-section gantry crane supporting leg and the second-section gantry crane supporting leg under the state. And repeating the process in turn, and finally completing the installation of the multi-section combined type gantry crane supporting leg. The automatic lifter repeats the following working process: when the lifting frame is lifted, a shaft of an electric push rod arranged on the lifting frame is ejected and clamped in a clamping groove of a lifting column, the lifting frame is ejected step by step, the lifting frame moves along the lifting column under the limitation of a guide wheel, and the position of the lifting frame is locked by a safety limiting block to avoid falling when the shaft of the electric push rod is completely ejected; when the lifting frame falls back, the electric push rod is operated to release the pull ring and the pull ring of the safety limiting block, the shaft of the electric push rod is moved out of the clamping groove of the lifting column, the safety limiting block is unlocked, then the recovery winch is released, and the lifting frame is lowered to the lower position through the steel wire rope and the steel wire rope guide wheel; and when the gantry crane is lifted, the gantry crane supporting legs arranged on the gantry crane beam are connected with the flange plate of the gantry crane supporting leg connecting piece, the electric push rod shaft is started to eject and clamp the shaft in the clamping groove of the lifting column, and the lifting frame is jacked up step by step. The special equipment is used, the floor area of a construction site and the number of hoisting equipment needed in the installation process are effectively reduced, the hoisting stroke is obviously shortened, the space limitation is not easy to cause, the construction space is small, the special equipment is simple and easy to operate, the auxiliary installation of large-scale equipment such as an automobile crane is not needed, and the construction time and the construction cost are reduced.

Description of the drawings: fig. l is a schematic structural diagram of the present invention. Fig. 2 is a sectional view taken along line B-B of fig. 1. Fig. 3 is a sectional view taken along line C-C of fig. 1, and fig. 4 is a schematic view illustrating a usage state of the present invention.

The specific implementation mode is as follows:

example (b): referring to fig. 1, 2, 3 and 4, an automatic elevator 11 for installing a multi-section combined gantry crane leg is characterized in that: the shaft of an electric push rod 3 arranged on a lifting frame 2 is ejected and clamped in a clamping groove of a lifting column 4, the lifting frame 2 is ejected step by step, the lifting frame 2 moves along the lifting column 4 under the limitation of a guide wheel 6, an electric push rod release pull ring 9 is connected with the shaft of the electric push rod 3 through a pull rope and moves out of the clamping groove of the lifting column 4, the position of the lifting frame 2 is locked through a safety limit block 5 to avoid falling when the shaft of the electric push rod 3 is ejected completely, a recovery winch 7 is connected with the lifting frame 2 through a steel wire rope and a steel wire rope guide wheel 8, a safety limit block pull ring 10 is connected with the safety limit block 5 through the pull rope to realize unlocking, and a gantry crane support leg connecting piece 1 is arranged on the side surface of the lifting frame 2 and; the flange plate of the portal crane support leg connecting piece 1 is provided with a plurality of bolt holes connected with each section of portal crane support leg 12 on the portal crane beam. The top ends of the four gantry crane supporting legs 12 are connected with a gantry crane main beam 13.

Claims (2)

1. The utility model provides an automatic elevator of installation multisection combination formula portal crane landing leg which characterized in that: the shaft of the electric push rod (3) arranged on the lifting frame (2) is ejected out and clamped in a clamping groove of the lifting column (4), the lifting frame (2) is jacked in a stepping mode, the lifting frame (2) moves along the lifting column (4) through the limitation of the guide wheel (6), the electric push rod releases the pull ring (9) to be connected with the shaft of the electric push rod (3) through the pull rope to move the shaft out of the clamping groove of the lifting column (4), the shaft of the electric push rod (3) is locked and prevented from falling down through the safety limiting block (5) when being ejected completely, the recovery winch (7) is connected with the lifting frame (2) through the steel wire rope and the steel wire rope guide wheel (8), the safety limiting block pull ring (10) is connected with the safety limiting block (5) through the pull rope to achieve unlocking, and the gantry crane support leg connecting piece (1) is arranged on the side face of the lifting frame (2) and used for hoisting various gantry.

2. The automatic elevator for installing the multi-section combined gantry crane supporting leg of claim 1, wherein: the flange of the portal crane support leg connecting piece (1) is provided with a plurality of bolt holes connected with each section of portal crane support leg (12) on the portal crane beam.

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