CN221070749U - Structure for overturning large-section steel pipe arch rib by using gantry crane - Google Patents

Abstract

The utility model provides a structure for overturning a large-section steel pipe arch rib by using gantry cranes, which comprises two gantry cranes, a first lifting point, a second lifting point, a first lifting tool and a second lifting tool, wherein the first lifting point is fixedly arranged at one end of each gantry crane, the second lifting point is movably arranged on each gantry crane, the first lifting point is provided with the first lifting tool, and the second lifting point is provided with the second lifting tool; the first lifting appliance comprises a pulley and an annular lifting rope, the lifting rope is provided with a shackle, two ends of the steel wire rope are connected through the shackle to form the annular lifting rope, the pulley is rotatably arranged on a lifting hook of a first lifting point, the outer circumferential surface of the pulley is provided with an annular chute, the lifting rope is arranged on the pulley and an arch rib chord tube of an arch rib section to be lifted in a surrounding mode, the second lifting appliance has the same structure as the first lifting appliance in the annular chute, automatic balance can be achieved when a large-section steel pipe arch rib is turned over, and surface paint damaging the arch rib section structure is avoided; avoiding the collision and damage of the arch rib sections.

Description

Structure for overturning large-section steel pipe arch rib by using gantry crane

Technical Field

The utility model relates to the technical field of tools, in particular to a structure for overturning a large-section steel pipe arch rib by using a gantry crane.

Background

The safety risk of the steel pipe arch rib section for turning over in the air at the lifting point of the cable crane on site is high, the uncontrollable factors are large, and in order to avoid the arch rib turning over in the air on site, the gantry crane is used for turning over in a factory. The steel rope can damage the paint of the arch rib steel pipe in the turning process, and even if the steel rope wraps the rubber pipe steel rope, the steel rope can slide to damage the paint. If the steel rope cannot slide, the steel rope automatically adjusts the position of the hanging point of the closed loop and the gravity center of the segment, and can slide on the steel pipe to damage paint.

Disclosure of utility model

In view of the above, the utility model aims to provide a structure for overturning a large-section steel pipe arch rib by a gantry crane, which can automatically balance when the large-section steel pipe arch rib is overturned, and avoid damage to paint and the arch rib section caused by collision.

The utility model solves the technical problems by the following technical means: the utility model provides a structure for overturning a large-section steel pipe arch rib by using gantry cranes, which comprises two gantry cranes, a first lifting point, a second lifting point, a first lifting tool and a second lifting tool, wherein the first lifting point is fixedly arranged at one end of each gantry crane, the second lifting point is movably arranged on each gantry crane, the first lifting point is provided with the first lifting tool, and the second lifting point is provided with the second lifting tool; the first lifting appliance comprises a pulley and an annular lifting rope, the annular lifting rope is provided with a shackle, two ends of a steel wire rope are connected to form an annular shape through the shackle, the pulley is rotatably arranged on a lifting hook of a first lifting point, an annular sliding groove is formed in the outer circumferential surface of the pulley, the annular lifting rope is arranged on an arch rib chord tube of the pulley and an arch rib section to be lifted in a surrounding mode, the annular lifting rope is arranged in the annular sliding groove, the second lifting appliance is identical to the first lifting appliance in structure, the pulley on the second lifting appliance is rotatably arranged on a lifting hook of a second lifting point, and the first lifting appliance and the second lifting appliance are arranged on the arch rib chord tube of the opposite angle of the arch rib section in a hanging mode.

Further, the first lifting appliance further comprises a supporting rubber pipe, a groove is formed in the outer ring of the supporting rubber pipe, the supporting rubber pipe is arranged on an arch rib string pipe with a lifting arch rib section in a surrounding mode, and the annular lifting rope is sleeved on the groove.

Further, the first lifting appliance further comprises a cushion pipe, the cushion pipe is coated on an arch rib string pipe adjacent to the support cushion rubber pipe, a second groove is formed in the outer ring of the cushion pipe, and one side of the annular lifting rope is arranged in the second groove.

Further, the inner rings of the support cushion rubber pipe and the cushion pipe are both arranged in an arc shape with the same diameter as the arch rib chord pipe, the amplitude of the arc is larger than 225 degrees and smaller than 315 degrees, the width of the sliding groove of the support cushion rubber pipe is 3-5 times of the diameter of the steel wire rope, the width of the second groove of the cushion pipe is 2-3 times of the width of the groove, and the central surfaces of the cushion pipe and the support cushion rubber pipe are arranged on the same surface.

Further, the novel arch rib support comprises a temporary buttress, wherein the temporary buttress is used for supporting an arch rib section, an arc matched with an arch rib chord tube is arranged on the upper surface of the temporary buttress, an arc-shaped rubber gasket is arranged in the arc, and the thickness of the rubber gasket is 2-4 cm.

According to the technical scheme, the beneficial effects of the utility model are as follows: the utility model provides a gantry crane arch rib section overturning tool which comprises two gantry cranes, a first lifting point, a second lifting point, a first lifting tool and a second lifting tool, wherein the first lifting point is fixedly arranged at one end of each gantry crane; the first lifting appliance comprises a pulley and an annular lifting rope, the annular lifting rope is provided with a shackle, two ends of a steel wire rope are connected to form an annular shape through the shackle, the pulley is rotatably arranged on a lifting hook of a first lifting point, an annular sliding groove is formed in the outer circumferential surface of the pulley, the annular lifting rope is arranged on an arch rib chord tube of the pulley and an arch rib section to be lifted in a surrounding mode, the annular lifting rope is arranged in the annular sliding groove, the second lifting appliance is identical to the first lifting appliance in structure, the pulley on the second lifting appliance is rotatably arranged on a lifting hook of a second lifting point, and the first lifting appliance and the second lifting appliance are arranged on the arch rib chord tube of the opposite angle of the arch rib section in a hanging mode. The automatic balancing can be realized when the large section is turned 180 degrees, and damage to paint is avoided; avoiding the collision and damage of the arch rib sections.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

Fig. 1 is a schematic diagram of a gantry crane for overturning a large-section steel pipe arch rib structure during hoisting;

Fig. 2 to 6 are schematic views of hoisting steps of the structure of turning over a large-section steel pipe arch rib by using a gantry crane;

FIG. 7 is a schematic view of a cushion pipe of the structure of a large-section steel pipe arch rib turned over by a gantry crane;

FIG. 8 is a schematic diagram of a cushion rubber tube with a gantry crane turning over the structure of a large-section steel tube arch rib;

Reference numerals:

1-a gantry crane; 2-a first lifting point; 3-a second suspension point; 4-a first lifting appliance; 5-a second lifting appliance; 41-pulley; 42-endless slings; 43-shackle; 6, supporting rubber tube; 7-padding the tube; 8-temporary buttresses; 61-grooves; 71-a second groove; 9-rib segments.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

Referring to fig. 1 to 8, the utility model provides a structure for turning over a large-section steel pipe arch rib by using gantry cranes, which comprises two gantry cranes 1, a first lifting point 2, a second lifting point 3, a first lifting device 4 and a second lifting device 5, wherein the first lifting point 2 is fixedly arranged at one end of each gantry crane 1, the second lifting point 3 is movably arranged on each gantry crane 1, the first lifting point 2 is provided with the first lifting device 4, and the second lifting point 3 is provided with the second lifting device 5; the first lifting appliance 4 comprises a pulley 41 and an annular lifting rope 42, a shackle 43 is arranged on the annular lifting rope 42, two ends of a steel wire rope are connected to form an annular shape through the shackle 43, the pulley 41 is rotatably arranged on a lifting hook of the first lifting point 2, an annular sliding groove is formed in the outer circumferential surface of the pulley 41, the annular lifting rope 42 is arranged on the pulley 41 and an arch rib chord tube of an arch rib section to be lifted in a surrounding mode, the annular lifting rope 42 is arranged in the annular sliding groove, the second lifting appliance 5 is identical to the first lifting appliance 4 in structure, the pulley 41 on the second lifting appliance 5 is rotatably arranged on a lifting hook of the second lifting point 3, and the first lifting appliance 4 and the second lifting appliance 5 are hung on the arch rib chord tube of the opposite angle of the arch rib section. By providing a rotatable trolley 41 at the main suspension point, the position of the steel rope is adjusted by the trolley 41, and the steel rope cannot damage the arch rib and paint by sliding friction at the binding position of the arch rib. The automatic balancing can be realized during hoisting, and the large section can be turned 180 degrees, so that the damage to paint is avoided; avoiding the collision and damage of the arch rib sections.

As a further improvement to the above technical solution, the first lifting appliance 4 further includes a supporting rubber tube 6, a groove 61 is provided on an outer ring of the supporting rubber tube 6, the supporting rubber tube 6 is enclosed on a rib chord tube with a lifting rib section, and the annular lifting cable 42 is sleeved on the groove 61. By providing the bolster hose 6 and locating the ring slings 42 within the grooves 61, the wire rope slides during lifting without damaging the paint of the rib chord tube. The two side edges of the groove on the support cushion rubber tube are contracted inwards to prevent the steel wire rope from jumping out.

As a further improvement to the above technical solution, the first hanger 4 further includes a cushion pipe 7, the cushion pipe 7 is wrapped on a rib chord pipe adjacent to the cushion rubber pipe 6, a second groove 71 is provided on an outer ring of the cushion pipe 7, and one side of the annular sling 42 is disposed in the second groove 71. By arranging the cushion pipe 7, when the hoisting is rotated, the steel wire rope on the side is abutted in the second groove 71 of the cushion pipe 7, so that paint cannot be scraped. The support cushion rubber tube and the cushion tube are both made of rubber materials. The two side edges of the second groove on the cushion pipe are outwards expanded into a horn mouth shape, so that the steel wire rope is easy to enter the second groove during hoisting.

As a further improvement to the technical scheme, the inner rings of the support cushion rubber tube 6 and the cushion tube 7 are all arranged in an arc shape with the same diameter as that of the arch rib chord tube, the amplitude of the arc is larger than 225 degrees and smaller than 315 degrees, the width of a sliding groove of the support cushion rubber tube 6 is 3-5 times of the diameter of a steel wire rope, the width of a second groove 71 of the cushion tube 7 is 2-3 times of the width of the groove 61, and the center faces of the cushion tube 7 and the fulcrum rubber tube are arranged on the same surface. The rubber tube 6 and the rubber tube are both arranged in arc shape, so that the rubber tube is convenient to install on the arch rib chord tube and cannot slide on the arch rib chord tube, and the rubber tube is convenient to take down after hoisting is completed; setting the width of the second groove 71 of the cushion pipe 7 to 2-3 times the width of the groove 61 is convenient for the wire rope to automatically enter the second groove 71 without touching the arch rib chord pipe to damage paint during hoisting.

As a further improvement to the technical scheme, the novel arch rib support further comprises a temporary support pier 8, wherein the temporary support pier 8 is used for supporting an arch rib section, an arc matched with an arch rib chord tube is arranged on the upper surface of the temporary support pier 8, an arc-shaped rubber gasket is arranged in the arc, and the thickness of the rubber gasket is 2-4 cm. The binding steel rope and the contact point of the temporary buttress 8 and the main pipe are respectively provided with a rubber gasket of 2-4 cm to protect the paint surface of the main pipe.

The overturning of the arch rib segment by using the overturning tool comprises the following steps:

1. two symmetrically arranged gantry cranes 1 are used for lifting and overturning, four-point gantry cranes are used for diagonally binding and overturning; firstly, a first lifting point 2 of two gantry cranes 1 is lowered, a shackle 43 on a first lifting appliance 4 is unlocked, then a cushion rubber pipe 6 at one end of the first lifting appliance 4 is sleeved on a arch rib chord pipe below one side of an arch rib section close to the first lifting point 2, then an annular sling 42 passes through a groove 61 on the cushion rubber pipe 6 and a first pulley 41 on the first lifting point 2, two ends of the annular sling 42 are connected by using the shackle 43 to form an annular shape, then a cushion pipe 7 is sleeved on a round pipe above, the cushion pipe 7 and the cushion rubber pipe 6 are on the same vertical surface, the first lifting point 2 is tightened to clamp one side of the annular sling 42 in a second groove 71 of the cushion pipe 7, and the binding position of the lifting point is required to be correspondingly adjusted according to the gravity of the section so as to ensure that the stress of each lifting point is balanced; the annular sling is installed, the shackle is prevented from passing through the position of the main steel pipe, paint is prevented from being damaged by friction with the steel pipe, the shackle position can be automatically adjusted according to the gravity center and the length of a steel rope closed loop in the overturning process, and the shackle adjusting position cannot be contacted with the steel pipe. Preferably, the outer surface of the shackle is coated with a layer of foam material or rubber material;

2. The second lifting point 3 is moved to be positioned right above the arch rib chord tube at the other side of the arch rib section, the supporting rubber tube 6 of the second lifting tool 5 is sleeved on the arch rib chord tube at the upper side of the arch rib section, the steel wire rope of the second lifting tool 5 is wound on the second supporting rubber tube 6 and the second pulley 41 to form an annular sling 42 by the same method, then the second supporting tube 7 is sleeved on the arch rib chord tube at the lower side of the arch rib section, the central surfaces of the second supporting tube 7 and the second supporting rubber tube 6 are positioned on the same vertical surface, and the first lifting tool 4 and the second lifting tool 5 are arranged on the arch rib chord tube at the opposite angles of the arch rib section;

3. After the lifting appliance is installed, lifting is started, firstly, the first lifting point 2 and the second lifting point 3 are lifted simultaneously, after the lower arch rib chord tube at the position of the second lifting point 3 is 30-50 cm away from the ground, the second lifting point 3 is fixed in the vertical direction and moves in the horizontal direction, the first lifting point 2 continues to lift until the arch rib segment reaches the vertical state, and after the temporary buttress 8 is placed on the ground, the arch rib segment is lowered to enable the arch rib chord tube below the arch rib segment to be placed on the temporary buttress 8;

4. The hanging point is replaced, the first hanging tool 4 is installed below the arch rib section, the second hanging tool 5 is installed above the arch rib section, the first hanging tool 4 and the second hanging tool 5 are installed on arch rib chord tubes on opposite angles of the arch rib section, and when the hanging point is replaced, the hanging points are replaced one by one, and then the lower hanging point is replaced and then the upper hanging point is replaced. At least 3 hanging points are ensured to participate in stress in the replacement process, slow overturning is adopted in the overturning process, and nylon ropes are used for temporarily taking wind to ensure that the main arch overturns stably.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims (5)

1. The utility model provides a with structure of big segmental steel pipe arch rib of portal crane upset which characterized in that: the lifting device comprises two gantry cranes (1), a first lifting point (2), a second lifting point (3), a first lifting tool (4) and a second lifting tool (5), wherein the first lifting point (2) is fixedly arranged at one end of each gantry crane (1), the second lifting point (3) is movably arranged on each gantry crane (1), the first lifting point (2) is provided with the first lifting tool (4), and the second lifting tool (5) is arranged on the second lifting point (3); the first lifting appliance (4) comprises a pulley (41) and an annular lifting rope (42), a shackle (43) is arranged on the annular lifting rope (42), two ends of a steel wire rope are connected to form the annular lifting rope through the shackle (43), the pulley (41) is rotatably arranged on a lifting hook of a first lifting point (2), an annular sliding groove is formed in the outer circumferential surface of the pulley (41), the annular lifting rope (42) is arranged on the pulley (41) and a rib chord tube of a rib section to be lifted, the annular lifting rope (42) is arranged in the annular sliding groove, the second lifting appliance (5) is identical to the first lifting appliance (4) in structure, the pulley (41) on the second lifting appliance (5) is rotatably arranged on the lifting hook of the second lifting point (3), and the first lifting appliance (4) and the second lifting appliance (5) are hung on the rib chord tube of the opposite angle of the rib section.

2. The structure of the gantry crane overturning large-section steel pipe arch rib according to claim 1, wherein: the first lifting appliance (4) further comprises a supporting rubber pipe (6), a groove (61) is formed in the outer ring of the supporting rubber pipe (6), the supporting rubber pipe (6) is arranged on an arch rib chord pipe with a lifting arch rib section in a surrounding mode, and the annular lifting rope (42) is sleeved on the groove (61).

3. The structure of turning over the large-section steel pipe arch rib with the gantry crane according to claim 2, wherein: the first lifting appliance (4) further comprises a cushion pipe (7), the cushion pipe (7) is coated on an arch rib string pipe adjacent to the support cushion rubber pipe (6), a second groove (71) is formed in the outer ring of the cushion pipe (7), and one side of the annular lifting rope (42) is arranged in the second groove (71).

4. A gantry crane overturning large section steel pipe arch rib structure according to claim 3, characterized in that: the inner rings of the support cushion rubber tube (6) and the cushion tube (7) are all arranged in an arc shape with the same diameter as the arch rib chord tube, the amplitude of the arc is larger than 225 degrees and smaller than 315 degrees, the width of a sliding groove of the support cushion rubber tube (6) is 3-5 times of the diameter of a steel wire rope, the width of a second groove (71) of the cushion tube (7) is 2-3 times of the width of the groove (61), and the center faces of the cushion tube (7) and the fulcrum rubber tube are arranged on the same surface.

5. The structure for turning over the large-section steel pipe arch rib by the gantry crane according to claim 4, wherein: the novel arch rib support comprises an arch rib chord tube, and is characterized by further comprising a temporary buttress (8), wherein the temporary buttress (8) is used for supporting the arch rib section, an arc matched with the arch rib chord tube is arranged on the upper surface of the temporary buttress (8), an arc-shaped rubber gasket is arranged in the arc, and the thickness of the rubber gasket is 2-4 cm.