CN211226009U

CN211226009U - Superimposed sheet hoist that pulling force distributes evenly

Info

Publication number: CN211226009U
Application number: CN201921869477.8U
Authority: CN
Inventors: 王长磊; 铁维騄; 谷东霖; 王洋; 赵雨桐
Original assignee: China Construction Second Engineering Bureau Co Ltd
Current assignee: China Construction Second Engineering Bureau Co Ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-08-11
Anticipated expiration: 2029-11-01

Abstract

The utility model relates to a load hanging device for a crane, and discloses a laminated slab lifting appliance with uniform tension distribution, which comprises a lifting frame with lifting lugs on the upper and lower surfaces and a matched rigging; the rigging comprises an upper sling, a lower sling, a pulley hook and a damper; two ends of a lower sling are connected to the hanger, at least three superimposed slab lifting hooks are arranged on the lower sling at intervals along the length direction, and a sling between two adjacent superimposed slab lifting hooks on each lower sling is hung on a pulley lifting hook on the bottom surface of the hanger; the damper is arranged on a lower sling at one side of the pulley lifting hook. The utility model discloses can avoid the superimposed sheet to appear the crack on the superimposed sheet with the pulling force evenly distributed of hoist, and when the superimposed sheet took place to rock at hoist and mount in-process, the hoist cable slided fast under the accessible restriction and restricts rocking of superimposed sheet.

Description

Superimposed sheet hoist that pulling force distributes evenly

Technical Field

The utility model relates to a load cable suspension device for hoist especially relates to a superimposed sheet hoist that pulling force distributes evenly.

Background

The fabricated building has short construction period and high standardization degree, and is gradually becoming the mainstream of a newly-built building. And large-area prefabricated parts such as laminated slabs and the like need to be hoisted in the fabricated building.

The thickness of the laminated plate is quite single and thin compared with the length of the laminated plate, when four corners are erected, the rigidity of the laminated plate is not enough to resist dead weight, deformation to a certain degree can occur, and the deformation resistance of concrete is poor. Therefore, when the laminated slab is hoisted in a four-corner hoisting mode at present, severe quality defects such as cracks and the like often appear on the longitudinal axis of the laminated slab.

The uniform distribution of the tension is not feasible simply by increasing the number of the slings, the Young modulus of the material of the conventional slings is very high, the deformation is very small, the lengths of the slings are strictly controlled to ensure that the tension is uniformly distributed on different slings, and the requirement on the processing precision is very high. The rigging of building site can not reach required precision, and after 4 were surpassed to hoist cable quantity, only can four hoist cables be in the state of tightening, and remaining hoist cable can not play the effect of sharing the pulling force.

In addition, when meeting strong wind weather, the superimposed sheet can violently rock in the hoist and mount process, if can restrict the hoist cable and slide fast, then can alleviate the superimposed sheet degree of rocking. The automobile safety belt adopts the principle, and the quick drawing of the safety belt is limited by the damper, so that a passenger is protected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pulling force distributes even superimposed sheet hoist.

The technical problem to be solved is that: when the laminated slab is hoisted, the laminated slab has serious quality defects such as cracks due to deformation.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a laminated slab lifting appliance with uniform tension distribution comprises a lifting frame and matched rigging, wherein lifting lugs are respectively arranged on the upper surface and the lower surface of the lifting frame;

the hanger is a rectangular frame formed by enclosing hanger long beams and hanger short beams, at least two stiffening beams are arranged between the two hanger long beams at intervals along the length direction of the hanger long beams, and the hanger short beams and the stiffening beams are respectively and fixedly connected with the hanger long beams; the long beam of the hanging bracket is a telescopic rod with a locking device;

the lifting lugs comprise upper lifting lugs, lower lifting lugs and pulley lifting lugs, and the lifting lugs are fixedly connected with the lifting frame;

the upper lifting lugs are arranged at the two end positions of the upper surface of the long beam of the lifting frame; the lower lifting lugs are arranged at the two ends of the lower surface of the long beam of the hanging bracket; the pulley lifting lugs are arranged on the lower surface of the hanger long beam and adjacent to the end part of the reinforcing beam;

the rigging comprises an upper sling for connecting the upper lifting lug with the crane hook, a lower sling for connecting the lower lifting lug with the laminated slab, a pulley lifting hook correspondingly hung on the pulley lifting lug, and a damper;

two ends of each lower sling are respectively connected with two lower lifting lugs on one hanger long beam, at least three superimposed slab lifting hooks are arranged on each lower sling at intervals along the length direction, and slings between two adjacent superimposed slab lifting hooks on each lower sling are hung on pulleys of pulley lifting hooks corresponding to the upper parts of the slings;

the damper is arranged on the lower sling at one side of the pulley lifting hook and is detachably connected with the pulley lifting hook.

Furthermore, the hanger long beam is a telescopic rod formed by connecting square steel pipes, and all sections of the telescopic rod are locked through bolts.

Further, the hanger short beam and the stiffening beam are both square steel tubes, the hanger long beam is in full-welding connection with the hanger short beam, and the hanger long beam is in full-welding connection with the stiffening beam.

Further, the seam between the hanger long beam and the hanger short beam is reinforced through a reinforcing angle iron, and the reinforcing angle iron is respectively in full-welding connection with the hanger long beam and the hanger short beam.

Furthermore, the upper sling is a steel cable, the upper sling is connected with the upper lifting lug through a shackle, and the lengths of the upper slings are equal.

Furthermore, the lower sling is a steel cable, the lower sling is connected with the lower lifting lug through a shackle, and the lengths of the lower slings are equal.

Furthermore, the superimposed sheet lifting hook passes through shackle sliding connection with lower hoist cable.

Further, the damper is a friction rotating shaft type damper.

The utility model relates to a pulling force distributes even superimposed sheet hoist and compares with prior art, has following beneficial effect:

in the utility model, the lower sling is connected with the hanger in a sliding way through the pulley and is connected with the superimposed sheet hook in a sliding way through the shackle, and the connecting points do not destroy the transmission of the pulling force on the lower sling, so that all the pulling forces on the same lower sling are equal, and the pulling force can be uniformly distributed on all the superimposed sheet hooks; meanwhile, the number of the laminated slab lifting hooks for hooking the laminated slabs is increased from four in the traditional lifting appliance to six or more, so that the pulling force of a crane can be uniformly distributed on the laminated slabs, the deformation of the laminated slabs is limited by the lifting hooks near the longitudinal axis of the laminated slabs, and the laminated slabs are prevented from cracking;

the utility model discloses in, be provided with the attenuator on the lower hoist cable of pulley lifting hook one side, when the superimposed sheet rocks because of wind or focus unstability takes place at the hoist and mount in-process, the attenuator can restrict the quick slip of hoist cable down to restrict rocking of superimposed sheet.

The utility model discloses a superimposed sheet hoist that pulling force distributes evenly is explained further below with the attached drawing.

Drawings

Fig. 1 is a front view of a laminated slab hanger with uniform tension distribution according to the present invention;

fig. 2 is a front view of a hanger in a laminated slab hanger with uniform tension distribution according to the present invention;

fig. 3 is a top view of a hanger in a laminated slab spreader with uniform tension distribution according to the present invention;

fig. 4 is a bottom view of a hanger in a laminated slab hanger with uniform tension distribution according to the present invention;

the combined lifting device comprises 11-upper lifting lugs, 12-lower lifting lugs, 13-pulley lifting lugs, 14-lifting frame long beams, 15-lifting frame short beams, 16-reinforcing angle iron, 17-reinforcing beams, 21-upper lifting ropes, 22-lower lifting ropes, 23-pulley lifting hooks, 24-dampers and 25-laminated plate lifting hooks.

Detailed Description

As shown in fig. 1-4, the utility model relates to a laminated slab lifting appliance with uniform tension distribution, which comprises a hanger with lifting lugs on the upper and lower surfaces, and a matched rigging.

The hanger is a rectangular frame formed by enclosing a hanger long beam 14 and a hanger short beam 15, at least two reinforcing beams 17 are arranged between the two hanger long beams 14 at intervals along the length direction of the hanger long beam 14, and the hanger short beam 15 and the reinforcing beams 17 are respectively fixedly connected with the hanger long beam 14;

the hanger long beam 14 is a telescopic rod formed by connecting square steel pipes, all sections of the telescopic rod are locked through bolts, and the telescopic hanger is favorable for lifting laminated slabs with different lengths; the hanger short beam 15 and the stiffening beam 17 are both square steel tubes, the hanger long beam 14 is in full-welded connection with the hanger short beam 15, and the hanger long beam 14 is in full-welded connection with the stiffening beam 17;

the seam between the hanger long beam 14 and the hanger short beam 15 is reinforced by a reinforcing angle iron 16, and the reinforcing angle iron 16 is respectively in full-welding connection with the hanger long beam 14 and the hanger short beam 15.

The lifting lugs are arranged on the surface of the long beam 14 of the hanging bracket and fixedly connected with the long beam 14 of the hanging bracket; the lifting lugs cannot be arranged on the hanger short beam 15 or the reinforcing beam 17, and when the lifting lugs are arranged on the hanger short beam 15 or the reinforcing beam 17, the stress transmitted along the welding line can be increased, so that the service life of the hanger is not favorable;

the lifting lugs comprise an upper lifting lug 11, a lower lifting lug 12 and a pulley lifting lug 13;

the upper lifting lug 11, the lower lifting lug 12 and the pulley lifting lug 13 are all round steel lifting lugs with the diameter of 20 mm; if the laminated slab with the length exceeding 5m needs to be hoisted frequently, the steel plate lifting lugs are used instead;

the upper lifting lugs 11 are arranged at the two end positions of the upper surface of the long beam 14 of the lifting frame; the lower lifting lugs 12 are arranged at the two ends of the lower surface of the long beam 14 of the hanging bracket; the pulley lifting lugs 13 are arranged on the lower surface of the hanger long beam 14 and adjacent to the end part of the reinforcing beam 17, and the pulley lifting lugs 13 are arranged on the lower surface of the hanger long beam 14 and close to the reinforcing beam 17, so that the tension of the pulley lifting lugs 13 on the hanger can be uniformly distributed on a plurality of beams.

The rigging comprises an upper sling 21 connecting the upper lifting lug 11 with the crane hook, a lower sling 22 connecting the lower lifting lug 12 with the laminated slab, a pulley lifting hook 23 correspondingly hung on the pulley lifting lug 13, and a damper 24;

two ends of each lower sling 22 are respectively connected with two lower lifting eyes 12 on one hanger long beam 14, at least three laminated slab lifting hooks 25 are arranged on each lower sling 22 at intervals along the length direction, the laminated slab lifting hooks 25 are connected with the lower slings 22 in a shackle sliding manner, and the sling between two adjacent laminated slab lifting hooks 25 on each lower sling 22 is hung on a pulley of a pulley lifting hook 23 corresponding to the upper part; the pulley and the laminated slab lifting hook 25 do not damage the transmission of the tension on the lower sling 22, so that the tension on each part of the same lower sling 22 is equal, and the tension can be uniformly distributed on each laminated slab lifting hook 25;

the upper sling 21 is a steel cable, the upper sling 21 is connected with the upper lifting lug 11 through a shackle, and the lengths of the upper slings 21 are equal; similarly, the lower sling 22 is a steel cable, the lower sling 22 is connected with the lower lifting lug 12 through a shackle, and the lengths of the lower slings 22 are equal;

the damper 24 is arranged on the lower sling 22, the damper 24 is a friction rotating shaft type damper 24, the friction rotating shaft type damper 24 has simple structural parts and is not easy to damage, and other types of dampers 24, such as a flip rotating shaft damper 24, can also be used; damper 24 is provided on the pulley hook 23 side, and detachably connected to pulley hook 23. When the composite slab shakes due to wind or unstable gravity during the lifting process, the damper 24 can limit the quick sliding of the lower sling 22, thereby limiting the shaking range of the composite slab.

The utility model relates to a pulling force distributes even superimposed sheet hoist, its installation and use include following step:

checking the connection condition of the rigging, re-fastening the loosened connecting piece, and checking the abrasion condition of the steel cable, and if the abrasion is serious, replacing the steel cable;

and step two, hanging the upper sling 21 on a crane hook, hooking the reserved steel bars on the laminated slab by using the laminated slab lifting hook 25 for lifting, and paying attention to the fact that the laminated slab lifting hook 25 on the same lower sling 22 is hooked on the same main steel bar of the laminated slab.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a pulling force distributes even superimposed sheet hoist which characterized in that: comprises a hanger with lifting lugs on the upper and lower surfaces, and a matched rigging;

the hanger is a rectangular frame formed by enclosing hanger long beams (14) and hanger short beams (15), at least two reinforcing beams (17) are arranged between the two hanger long beams (14) at intervals along the length direction of the hanger long beams (14), and the hanger short beams (15) and the reinforcing beams (17) are respectively and fixedly connected with the hanger long beams (14); the long beam (14) of the hanging bracket is a telescopic rod with a locking device;

the lifting lugs comprise upper lifting lugs (11), lower lifting lugs (12) and pulley lifting lugs (13), and the lifting lugs are fixedly connected with the lifting frame;

the upper lifting lugs (11) are arranged at the two end positions of the upper surface of the long beam (14) of the hanging bracket; the lower lifting lugs (12) are arranged at the two ends of the lower surface of the long beam (14) of the hanging bracket; the pulley lifting lug (13) is arranged at the position, adjacent to the end part of the reinforcing beam (17), of the lower surface of the hanger long beam (14);

the rigging comprises an upper sling (21) for connecting an upper lifting lug (11) and a crane hook, a lower sling (22) for connecting a lower lifting lug (12) and a laminated slab, a pulley lifting hook (23) correspondingly hung on the pulley lifting lug (13), and a damper (24);

two ends of each lower sling (22) are respectively connected with two lower lifting lugs (12) on one hanger long beam (14), at least three laminated slab lifting hooks (25) are arranged on each lower sling (22) at intervals along the length direction, and a sling between two adjacent laminated slab lifting hooks (25) on each lower sling (22) is hung on a pulley of a pulley lifting hook (23) corresponding to the upper part;

the damper (24) is arranged on a lower sling (22) on one side of the pulley lifting hook (23) and is detachably connected with the pulley lifting hook (23).

2. The laminated plate hanger with uniform tension distribution according to claim 1, wherein: the hanger long beam (14) is a telescopic rod formed by connecting square steel pipes, and all sections of the telescopic rod are locked through bolts.

3. The laminated plate hanger with uniform tension distribution as claimed in claim 2, wherein: the hanger short beam (15) and the reinforcing beam (17) are both square steel tubes, the hanger long beam (14) is in full-weld connection with the hanger short beam (15), and the hanger long beam (14) is in full-weld connection with the reinforcing beam (17).

4. The laminated plate hanger with uniform tension distribution according to claim 3, wherein: the joint between the long hanger beam (14) and the short hanger beam (15) is reinforced by a reinforcing angle iron (16), and the reinforcing angle iron (16) is in full-welding connection with the long hanger beam (14) and the short hanger beam (15) respectively.

5. The laminated plate hanger with uniform tension distribution as claimed in claim 4, wherein: the upper sling (21) is a steel cable, the upper sling (21) is connected with the upper lifting lug (11) through a shackle, and the lengths of the upper sling (21) are equal.

6. The laminated plate hanger with uniform tension distribution according to claim 5, wherein: the lower sling (22) is a steel cable, the lower sling (22) is connected with the lower lifting lug (12) through a shackle, and the lengths of the lower sling (22) are equal.

7. The laminated plate hanger with uniform tension distribution according to claim 6, wherein: the laminated slab lifting hook (25) is connected with the lower sling (22) in a sliding mode through a shackle.

8. The laminated plate hanger with uniform tension distribution according to claim 7, wherein: the damper (24) is a friction rotating shaft type damper (24).