CN221396841U - Combined lifting appliance for aerial swivel of large prefabricated part - Google Patents

Abstract

The utility model relates to the technical field of large-scale component hoisting, in particular to a combined lifting appliance for lifting a large-scale prefabricated component by a double-trolley gantry crane in an air swivel mode.

Description

Combined lifting appliance for aerial swivel of large prefabricated part

Technical Field

The utility model relates to the technical field of hoisting of large-sized components, in particular to a combined hoisting tool for hoisting a large-sized prefabricated component by a double-trolley gantry crane and turning in the air.

Background

In large-scale assembly type construction projects such as assembly type assembled tunnels, large-scale prefabricated components with lengths of tens of meters and weighing hundreds of tons are often needed. In order to ensure the structural safety of the large prefabricated part during hoisting, the prefabricated part is required to be hoisted according to the installed in-place posture and keep vertical balanced stress in the processes of unloading, transferring and assembling.

Due to the limitation of site conditions, the transport vehicle can only enter the construction site longitudinally, and the prefabricated components transported by loading along the length direction need to be rotated horizontally by 90 degrees to reach the required installation direction. Due to various factors, in many cases, the double-trolley gantry crane is adopted to unload and hoist the large-sized prefabricated part on the construction site, and the double-trolley crane lifts and lifts the prefabricated part, so that horizontal rotation cannot be realized. In addition, the prefabricated part is not of a conventional structure in most cases, lifting points of the prefabricated part are different in height in the horizontal direction, the length of a lifting rope of the existing lifting appliance is fixed, the lifting rope needs to be replaced when the prefabricated part is suitable for different lifting points, and the construction time is prolonged. Therefore, a lifting appliance for a double-trolley gantry crane needs to be designed, the prefabricated part can be horizontally rotated while lifting and unloading, the requirement of the installation direction is met, corresponding lifting ropes are configured according to different lifting points, the flexible switching of the lifting points is realized, the lifting appliance posture can be automatically adjusted to adapt to the difference of the lifting points, and the stable posture and vertical balance of stress of the prefabricated part during lifting are ensured.

Disclosure of utility model

The utility model aims at: the combined lifting appliance is provided with a lifting beam with a built-in rotation mechanism, so that the horizontal rotation of the components can be realized when the double hooks are lifted, and the unloading and lifting requirements are met; and the swinging grading cross beam is arranged, so that the difference conditions of the hanging points and the ropes are automatically adapted, the vertical balanced stress of the hanging points of the prefabricated parts is ensured, the hoisting requirement of assembly construction is met, and the construction efficiency and the quality safety are ensured.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

A combined lifting appliance for an aerial rotator of a large prefabricated part comprises a lifting beam device and a two-stage cross beam mechanism; the lifting beam device comprises a main beam and a rotation mechanism arranged on the main beam; the two-stage beam mechanism comprises a first-stage beam and 2 second-stage beams; the primary cross beam is suspended below the slewing mechanism, the secondary cross beam is suspended below two ends of the primary cross beam, and hanging points are respectively arranged below two ends of the secondary cross beam.

The rotary mechanism is vertically arranged at the position of the central axis inside the main beam and consists of a rotary main shaft, a thrust bearing and a rotary bearing, the rotary main shaft is supported at the position of the central axis inside the main beam through the rotary bearing and the thrust bearing, and a hoisting hole ring is arranged at the lower end of the rotary main shaft.

And the two ends of the main beam are symmetrically provided with 1 pin hole and pin shaft respectively, and are connected with the lower hanging points of the two trolleys of the gantry crane through the pin shafts respectively.

The middle of the top of the primary beam is provided with a pin hole and a pin shaft, and two ends of the primary beam are symmetrically provided with 1 pin hole respectively.

Preferably, the primary cross beam is connected to the lifting ring hole at the lower end of the rotary main shaft in a matched manner through the top pin hole and the pin shaft.

The middle of the top of the secondary beam is provided with a pin hole and a pin shaft, a hanging rope is arranged at the hanging point, and the lower end of the hanging rope is provided with a shackle.

Preferably, the secondary cross beam is connected with the pin holes at the two ends of the primary cross beam through the cooperation of the top pin holes and the pin shafts.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows: the combined lifting appliance can realize lifting operation of the double-trolley gantry crane on the heavy object through the lifting beam, and realize a horizontal direction rotation function through the rotation mechanism arranged on the lifting beam, thereby meeting the requirements of unloading and rotating the component direction when the double-trolley gantry crane is used on a construction site. The two-stage cross beam device of the combined lifting tool is connected in a pin hole and pin shaft matching mode, the primary cross beam and the secondary cross beam can vertically swing, automatic adaptation to differences of lifting points and ropes is achieved, the lifting points are guaranteed to be vertically and evenly stressed, deformation and damage of components in the lifting process are prevented, and quality safety of assembly engineering is guaranteed. The combined lifting tool is flexible in use mode, the secondary beam mechanism can be detached and used independently, corresponding component combination modes are selected according to different working scenes, and the combined lifting tool is suitable for various working requirements.

Drawings

Fig. 1 is a schematic structural view of a combined sling for lifting a large prefabricated part aerial rotator according to the present utility model.

Fig. 2 is a schematic structural view of the lifting beam device in fig. 1.

Fig. 3 is a schematic view of the two-stage beam mechanism of fig. 1.

Fig. 4 is a schematic view of hoisting a prefabricated member in an embodiment.

The marks in the figure: the device comprises a 1-lifting beam device, a 11-main beam, a 12-rotating main shaft, a 13-pin shaft, a 14-thrust bearing, a 15-rotating bearing, a 2-two-stage beam mechanism, a 21-primary beam, a 22-secondary beam, a 23-pin shaft, a 3-pin shaft, a 4-rotating mechanism, a 5-lifting rope, a 6-shackle and a 7-prefabricated member.

Detailed Description

The present utility model will be described in detail with reference to the accompanying drawings.

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1

As shown in fig. 1 to 3, the combined lifting appliance for lifting a large prefabricated part in the air and turning the prefabricated part in the embodiment comprises a lifting beam device 1 at the upper part, a two-stage cross beam mechanism 2 connected below the lifting beam device and a pin shaft 3. The lifting beam device is used for lifting the direction of the prefabricated component and the horizontal rotating component by the double trolleys, and the two-stage beam mechanism is used for hanging the prefabricated component 7 through the lifting rope 5 and the shackle 6, so that the difference of lifting points and rope tools can be automatically adapted, and the vertical balanced stress of the component is ensured.

In this embodiment, as shown in fig. 2, the lifting beam device 1 includes a main beam 11, a main rotating shaft 12, a lifting pin shaft 13, a thrust bearing 14, and a rotating bearing 15. The rotary main shaft 12 is supported on the thrust bearing 14 and the rotary bearing 15, and through the two-stage beam mechanism 2 of the lower end ring Kong Chengdiao, the prefabricated part 7 and the like, 360-degree horizontal rotation is realized when the prefabricated part is lifted by utilizing the function of the rotary mechanism, and the horizontal steering of the component can be easily completed by transversely pulling the cable ropes fixed at the two ends of the component or transversely pushing the cable ropes at the ends of the component.

Further, the thrust bearing 14 and the rotary bearing 15 of the embodiment are installed on the main beam 11, the main beam 11 is used for positioning and supporting the rotary main shaft 12, pin shafts 13 are installed in pin holes at two ends of the main beam 11, and the pin shafts are respectively connected with main hook hanging points of the gantry crane trolley through connecting plates or ropes to realize the hanging operation of the gantry crane double-trolley hanging component.

As shown in fig. 3, the two-stage beam mechanism 2 includes a primary beam 21, a secondary beam 22, and a pin 23. The primary cross beam 21 is hung at the lower end of the rotary main shaft 12 through the cooperation of the top pin hole and the pin shaft 3, the two secondary cross beams 22 are respectively hung at the two ends of the primary cross beam 21 through the top pin hole and the pin shaft 23, a group of hanging points are respectively arranged at the two ends of each secondary cross beam, and the hanging points are respectively connected with the hanging lugs of the prefabricated part 7 through the shackle 6 by using the hanging ropes 5, so that the lifting and hanging of the part are realized.

In summary, the lifting appliance of the embodiment realizes double-trolley lifting of the gantry crane through the pin shafts at the two ends of the main beam, and the main beam is provided with the rotary main shaft, so that horizontal steering can be realized when the prefabricated part is lifted; and the two ends of each beam of the two-stage beam device which is arranged uniquely are provided with hanging points correspondingly according to the distribution positions of the hanging points of the prefabricated components, and can vertically swing by taking the pin shaft as the center, so that the difference between the hanging points and the rope can be automatically adapted, the hanging points at all positions are always vertically and evenly stressed, and the deformation and the damage of the components in the hanging process are prevented.

Example 2

As shown in fig. 4, a rotary hanger for hanging a large-sized prefabricated member by a double trolley gantry crane according to embodiment 1 is used for a unloading operation of the prefabricated member, and the operation steps thereof are as follows:

Firstly, a lifting beam device 1 and a two-stage beam mechanism 2 are assembled on the ground below a gantry crane by a pin shaft 3 according to the drawing.

Two trolleys of the gantry crane are respectively stopped at corresponding positions above two pin holes of the lifting beam 1 and the pin shafts 13, the distance between the two trolleys is fixed, the distance between the two lifting hooks is kept equal to the distance between the two pin shafts, the lifting hook device is put down, the pin shafts 13 are connected by connecting plates, the lifting hooks are synchronously lifted to proper heights, and the shackle 6 and the lifting ropes 5 are arranged on the lifting lug plates of the two secondary cross beams 22.

The flat car for transporting the prefabricated parts 7 longitudinally enters a construction unloading site on one side of a highway, the gantry crane lifts the lifting rope 5 below the lifting appliance to a height exceeding the height of the prefabricated parts, the gantry crane moves to the upper part of the vehicle, the two-stage beam mechanism 2 rotates to be parallel to the prefabricated parts, the lifting appliance is lowered to align with the lifting lug of the prefabricated parts 7, the lifting rope 5 is connected with the lifting lug by the shackle 6, simultaneously, the two ends of the prefabricated parts 7 are tied with cable ropes, then the two trolleys synchronously lift the lifting appliance, the prefabricated parts 7 are lifted off the transport vehicle, the transport vehicle exits the construction site, and the prefabricated parts enter the highway to leave.

The trolley moves to the middle part of the main girder of the gantry crane, after no obstacle is confirmed in the field, the cable ropes at the two ends are pulled reversely, so that the prefabricated part 7 horizontally rotates to the transverse position, namely the installation direction, then the gantry crane is moved, the prefabricated part 7 is lifted to a part storage area, the prefabricated part 7 is lowered to a preset position, the connection between the lifting rope 5 and the prefabricated part 7 is removed, and the gantry crane is separated.

The embodiment is used for unloading the prefabricated parts by the double-trolley gantry crane, and can lift the prefabricated parts longitudinally entering the site for aerial steering under the condition of narrow site, and the rotary body can be easily completed by adopting the bearing rotary device, so that time and labor are saved, and the cost of the lifting equipment is low.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (7)

1. The combined lifting appliance for the aerial swivel of the large prefabricated part is characterized by comprising a lifting beam device (1) and a two-stage cross beam mechanism (2); the lifting beam device comprises a main beam (11) and a slewing mechanism (4) arranged on the main beam (11); the two-stage beam mechanism comprises a first-stage beam (21) and 2 second-stage beams (22); the primary cross beam (21) is suspended below the slewing mechanism (4), the secondary cross beam (22) is suspended below two ends of the primary cross beam (21), and hanging points are respectively arranged below two ends of the secondary cross beam (22).

2. The combined lifting appliance for the aerial swivel of the large prefabricated component according to claim 1, wherein the swivel mechanism (4) is vertically arranged at the inner central axis position of the main beam (11), the swivel mechanism (4) is composed of a swivel main shaft (12), a thrust bearing (14) and a swivel bearing (15), the swivel main shaft (12) is supported at the inner central axis position of the main beam (11) through the swivel bearing (15) and the thrust bearing (14), and a lifting hole ring (16) is arranged at the lower end of the swivel main shaft (12).

3. The combined lifting appliance for the aerial swivel of the large prefabricated component according to claim 1, wherein the two ends of the main beam (11) are symmetrically provided with 1 pin hole and pin shaft (13) respectively.

4. The combined lifting appliance for the aerial swivel of the large prefabricated component according to claim 1, wherein a pin hole and a pin shaft (3) are arranged in the middle of the top of the primary beam (21), and 1 pin hole and pin shaft (23) are symmetrically arranged at two ends of the primary beam (21).

5. The combined sling for an aerial rotator of a large prefabricated part according to claim 4, wherein a primary cross beam (21) is connected to the lifting ring hole (16) at the lower end of the rotary main shaft (15) in a matched manner through the pin hole at the top and a pin shaft (3).

6. The combined lifting appliance for the aerial swivel of the large prefabricated component according to claim 1, wherein pin holes and pin shafts (23) are arranged in the middle of the top of the secondary cross beam (22), lifting ropes (5) are arranged at hanging points, and shackles (6) are arranged at the lower ends of the lifting ropes (5).

7. The combined lifting appliance for the aerial swivel of the large prefabricated part according to claim 6, wherein the top pin holes of the secondary cross beam (22) are connected with the pin holes at the two ends of the primary cross beam (21) in a matched mode through pin shafts (23).