CN204778275U - But balancing jack -up hoist - Google Patents

Abstract

The utility model relates to an adjustable balance hoisting sling, which is characterized in that it comprises a movable pulley block (3), a balance adjusting screw (4), a sling main body (5) and a sling distribution beam (6). The movable pulley on the pulley block (3) is connected with the steel wire rope (2), and cooperates with the fixed pulley block (1) on the crane. 5) The spreader distribution beams (6) on both sides are connected to the lifting point pins of the component main body (7). ), and the other end is connected with the spreader main body (5). The utility model has unique structure, convenient installation, safe and reliable structure, high efficiency, energy saving, time-saving, labor-saving, flexible and other characteristics of adjustable balance hoisting spreader. It also shows its superiority.

Description

An adjustable balance hoisting sling

technical field

The utility model relates to an adjustable and balanced hoisting sling, which belongs to the field of hoisting equipment.

Background technique

With the rapid development of the national economy and the advancement of science and technology, the scope of application of steel structures in my country is constantly expanding, especially in high-rise buildings, stadiums, and long-span bridges. At present, the steel structure components have been partially realized in the factory flow operation. In order to ensure the production quality of the steel components and reduce the impact of on-site operations on the construction quality, the steel components should be made into large blocks in the factory and installed on site with a large crane.

When hoisting a large block with a crane, a single hook or an ordinary pole beam is used for hoisting. There are problems such as hoisting eccentricity and hoisting imbalance, and it is difficult to adjust, which poses a large safety hazard.

Contents of the invention

The purpose of the utility model is to overcome the above disadvantages and provide an adjustable balance hoisting sling, which can adjust the component when the component is eccentric to ensure the balance of the component hoisting and improve the safety of the steel structure operation.

The purpose of this utility model is achieved in this way: an adjustable balance hoisting spreader, which includes a movable pulley block, a balance adjustment screw, a spreader main body and a spreader distribution beam, the movable pulley on the movable pulley block is connected with a steel wire rope, and is connected with the hanging pulley. The fixed pulley block on the machine cooperates, and the three constitute the lifting ratio adjustment mechanism of the crane. The lower part of the movable pulley block is connected with the main body of the spreader by a pin shaft, and the main body of the spreader is connected to the lifting point of the main body of the component through the spreader distribution beams on both sides. The pin shaft is connected, and the balance adjusting screw rod is located on both sides of the movable pulley block, one end is connected with the movable pulley block, and the other end is connected with the main body of the spreader.

The movable pulley block is composed of the main structure, the movable pulley assembly, the movable pulley shaft, the lug of the spreader, the connecting pin shaft of the lug of the spreader and the pulling lug. The movable pulley assembly is supported on the main structure through the movable pulley shaft; the pulling lug and the lug plate of the spreader are welded on the main structure; the movable pulley block and the main body of the spreader are pinned by connecting the lug plate of the spreader to the pin shaft.

The adjusting screw rod is composed of a screw rod, an upper sleeve, a lower sleeve, a connecting ear plate and a screw rod. The two ends of the screw rod are respectively threadedly connected with the screw rod; one end of the upper sleeve and the lower sleeve is provided with a notch, the connecting ear plate is inserted into the notch and fixed by welding, and the other end is inserted into the screw rod for fixing.

Compared with the prior art, the utility model has the following beneficial effects:

1. Compared with the existing lifting sling, the balance adjustment screw is added. When the component hoisting is eccentric, the component can be balanced by adjusting the balance adjustment screw to ensure the safety of component hoisting.

2. Compared with the existing hoisting spreader, the hoist is used as the hoisting power, and the hoisting system is composed of the movable and fixed pulley block and the steering pulley, replacing the hoisting system mainly based on wire rope, so that the hoisting capacity of the crane is greatly improved.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the movable pulley block of the present invention.

FIG. 3 is a side view of FIG. 2 .

Fig. 4 is a schematic diagram of the structure of the main body of the spreader of the present invention.

Fig. 5 is a structural schematic diagram of the adjusting screw of the present invention.

Fig. 6 is a structural schematic diagram of the spreader distribution beam of the present invention.

in:

fixed pulley block 1

Wire rope 2

Moving pulley block 3

Balance adjustment screw 4

Spreader body 5

Spreader Distribution Beam 6

Component body 7

main structure 8

Moving pulley assembly 9

Moving pulley shaft 10

Spreader lug 11

Spreader ear plate connection pin 12

Laer 13

Spreader 14

Screw connection seat 15

Screw 16

Screw 17

upper sleeve 18

Connecting ear plate 19

lower sleeve 20

Upper connection ear plate 21

Upper connecting pin shaft 22

distribution beam 23

Lower connection ear plate 24

Bottom connection pin shaft 25.

Detailed ways

Referring to FIG. 1 , the utility model relates to an adjustable balance hoisting spreader, which includes a movable pulley block 3 , a balance adjusting screw 4 , a spreader main body 5 and a spreader distribution beam 6 . The movable pulley on the movable pulley block 3 is connected to the steel wire rope 2, and cooperates with the fixed pulley block 1 on the crane, and the three form a lifting ratio adjustment mechanism of the crane, and the adjustment ratio can be determined by the wire rope winding method. The lower part of the movable pulley block 3 is connected with the main body 5 of the spreader by a pin shaft. The main body of the spreader 5 is connected with the pin shaft of the lifting point of the main body of the component 7 through the spreader distribution beams 6 on both sides. The balance adjustment screw rod 4 is located on both sides of the movable pulley block 3, and is connected with it by a pin shaft.

The steel wire rope 2 turns to the fixed pulley on the boom through the steering pulley above the boom, then passes around the movable pulley on the hook assembly, and finally anchors under the boom, the hoist drives the wire rope, and is driven by the movable and fixed pulleys. Working together, the hoisting objects are lifted vertically.

2-3, the movable pulley block 3 is composed of a main structure 8, a movable pulley assembly 9, a movable pulley shaft 10, a spreader lug 11, a spreader lug connection pin 12 and a lug 13. The main structure 8 is a box-shaped structure, and the upper part is a trough-shaped structure with 4 box chambers. The movable pulley assembly 9 is supported on the main structure 8 through the movable pulley shaft; the pulling lug 13 and the lug plate 11 of the spreader are welded on the main structure 7; the movable pulley assembly 3 and the main body of the spreader 5 form a pin connection through the lug connecting pin 12 of the spreader.

Referring to FIG. 4 , the hanger main body 5 is composed of a hanger 14 and a screw connecting seat 15 . The spreader is a box-shaped structure with variable cross-section, and shaft holes with different distances are bored on the panel, and the connecting holes of the beam 6 are allocated to the spreader. Different shaft holes are used to connect, which can adapt to lifting weights with different spacing between lifting lugs. The screw connecting seat 15 is welded on the top of the hanger 14, and is connected with the adjusting screw 4 by a pin shaft.

Referring to FIG. 5 , the adjusting screw 4 is composed of a screw rod 16 , an upper sleeve 18 , a lower sleeve 20 , a connecting lug 19 and a screw 17 . Both screw rod 16 and screw rod 17 are made of round steel. One end of the screw rod 16 is processed into a left-handed external thread, and the other end is processed into a right-handed external thread. The upper sleeve 18 and the lower sleeve 20 are mainly steel pipes, with a notch at one end, the connecting ear plate 19 is inserted into the notch and welded with the steel pipe, and the other end is inserted into the screw rod 17, Welded with the screw. The two ends of the adjusting screw 4 are pinned to the pull lug 13 and the screw connecting seat 15 respectively through the connecting pin shaft.

Referring to FIG. 6 , the spreader distribution beam 6 is composed of an upper connecting lug 21 , an upper connecting pin 22 , a distribution beam 23 , a lower connecting lug 24 and a lower connecting pin 25 . The distribution beam 23 is a box-shaped structure, the upper and lower panels are provided with notches, the upper connecting ear plate 25 is inserted through the upper panel notch, and is welded with the distribution beam web and the lower panel; the lower connecting ear plate 24 is inserted by the lower panel groove It is inserted into the mouth and welded with the distribution beam web and upper panel. The lifting lug distribution beam is pinned to the spreader main body 5 through the upper connecting lug plate 21 and the upper connecting pin shaft 22; it is pinned to the lifting lug through the lower connecting lug plate 24 and the lower connecting pin shaft 25.

The following step-by-step introduction to an adjustable balance hoisting spreader operation process.

The steel wire rope is wound in series, the movable pulley block and the fixed pulley block of the crane form a hoisting system, the lug plate of the movable pulley block is pinned to the main body of the spreader, the two ends of the adjusting screw are respectively pinned to the lugs of the movable pulley block, and the main body of the spreader, and the spreader is distributed The upper part of the beam is pinned to the main body of the spreader, and the lower part is pinned to the hoisting lug of the main body of the component.

When the crane is lifted, the main body of the component leaves the ground, and observe whether the main body of the component is eccentric. If eccentricity occurs, adjust the lead screw of the adjusting screw accordingly according to the eccentricity to rebalance the component.

Claims (3)

1. a balance-adjustable hoisting sling, it is characterized in that it comprises running block (3), balanced regulating screw (4), suspender main body (5) and suspender distribution beam (6), movable pulley connecting steel wire ropes (2) on described running block (3), coordinate with the fixed pulley group (1) on loop wheel machine, three forms loop wheel machine lifting multiplying power regulating mechanism, described running block (3) bottom adopts bearing pin to be connected with suspender main body (5), the suspender distribution beam (6) of described suspender main body (5) by both sides and the suspension centre pinned connection of member body (7), described balanced regulating screw (4) is positioned at the both sides of running block (3), one end is connected with running block (3), the other end is connected with suspender main body (5).

2. a kind of balance-adjustable hoisting sling according to claim 1, it is characterized in that described running block (3) is connected bearing pin (12) by main structure (8), movable pulley assembly (9), movable pulley axle (10), suspender otic placode (11), suspender otic placode and drawn ear (13) to form, described movable pulley assembly (9) is supported in main structure (8) by movable pulley axle (10); Described ear (13) and the suspender otic placode (11) of drawing all is welded in main structure (7); Described running block (3) is connected bearing pin (12) with suspender main body (5) by suspender otic placode and forms pin joint.

3. a kind of balance-adjustable hoisting sling according to claim 1 and 2, is characterized in that described adjusting screw(rod) (4) is made up of screw mandrel (16), upper bush (18), lower sleeve (20), connection otic placode (19) and screw rod (17); The two ends of described screw mandrel (16) are connected with screw rod (17) screw thread fit respectively; One end of described upper bush (18) and lower sleeve (20) has notch, connects otic placode (19) and inserts notch and be welded and fixed, and the other end is inserted in screw rod (17) to be fixed.